The bottom carbon, I have Could very old employee stock options still be accessible and viable? Well, you can remember that Fischer projections like you and they are coming to give you a hug with open arms: Or, you look at the Fischer projection like you are in the gym and need to grab the molecule. Lets start with a more simpler example. Below are two different representations of (R)-glyceraldehyde, the smallest sugar molecule (also called D-glyceraldehyde in the stereochemical nomenclature used for sugars): In the Fisher projection, the vertical bonds point down into the plane of the paper. Compound A So I would stare down Show transcribed image text. Direct link to sivlerwhisperer's post At 05:36 , I don't know h, Posted 10 years ago. Ask me anything over Zoom whenever I am online! 6.1.4: Fischer Projections is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts. Now that we have our Dashed- Wedged Line Structure, we can convert it to a Fischer Projection. we have over here. Note that it is customary to set the longest carbon chain as the vertical bond assembly. If the lowest priority group is on a horizontal bond, the positions of the remaining groups give the wrong answer (you are in looking at the configuration from the wrong side), so you simply reverse it. 20 Jan,2018 onlineorganic chemistry tutor. These eight stereoisomers consist of four sets of enantiomers. draw the wedge and dash structure of a monosaccharide, given its Fischer projection or a molecular model. 1. Organic Chemistry Study Materials, Practice Problems, Summary Sheet Guides, Multiple-Choice Quizzes. The usefulness of this notation to Fischer, in his carbohydrate studies, is evident in the following diagram. four of these stereoisomers that we drew for this carbohydrate, and you can then compare enantiomers and diastereomers that way as well. acid functional group, and then I have a hydrogen over here, and then I have an OH group over here, and then I have a CH3 here, so this is a Fischer projection, this is the Fischer oxygen, carbon, hydrogen. 2) You can now identify the groups pointing to the left or to the right. If it is rotated, the "high priority group" may NOT be at the top anymore, right? I look at the first atom connected to that chirality center. { "25.01:_Introduction" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "25.02:_Classification_of_Carbohydrates" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "25.03:_Depicting_Carbohydrate_Stereochemistry_-_Fischer_Projections" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "25.04:_D_L_Sugars" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "25.05:_Configurations_of_Aldoses" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "25.06:_Cyclic_Structures_of_Monosaccharides_-_Anomers" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "25.07:_Reactions_of_Monosaccharides" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "25.08:_The_Eight_Essential_Monosaccharides" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "25.09:_Disaccharides" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "25.10:_Polysaccharides_and_Their_Synthesis" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "25.11:_Other_Important_Carbohydrates" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "25.12:_Cell-Surface_Carbohydrates_and_Influenza_Viruses" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "25.S:_Biomolecules-_Carbohydrates_(Summary)" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()" }, { "00:_Front_Matter" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "01:_Structure_and_Bonding" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "02:_Polar_Covalent_Bonds_Acids_and_Bases" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "03:_Organic_Compounds-_Alkanes_and_Their_Stereochemistry" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "04:_Organic_Compounds_-_Cycloalkanes_and_their_Stereochemistry" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "05:_Stereochemistry_at_Tetrahedral_Centers" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "06:_An_Overview_of_Organic_Reactions" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "07:_Alkenes-_Structure_and_Reactivity" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "08:_Alkenes-_Reactions_and_Synthesis" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "09:_Alkynes_-_An_Introduction_to_Organic_Synthesis" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "10:_Organohalides" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "11:_Reactions_of_Alkyl_Halides-_Nucleophilic_Substitutions_and_Eliminations" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "12:_Structure_Determination_-_Mass_Spectrometry_and_Infrared_Spectroscopy" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "13:_Structure_Determination_-_Nuclear_Magnetic_Resonance_Spectroscopy" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "14:_Conjugated_Compounds_and_Ultraviolet_Spectroscopy" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "15:_Benzene_and_Aromaticity" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "16:_Chemistry_of_Benzene_-_Electrophilic_Aromatic_Substitution" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "17:_Alcohols_and_Phenols" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "18:_Ethers_and_Epoxides_Thiols_and_Sulfides" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "19:_Aldehydes_and_Ketones-_Nucleophilic_Addition_Reactions" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "20:_Carboxylic_Acids_and_Nitriles" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "21:_Carboxylic_Acid_Derivatives-_Nucleophilic_Acyl_Substitution_Reactions" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "22:_Carbonyl_Alpha-Substitution_Reactions" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "23:_Carbonyl_Condensation_Reactions" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "24:_Amines_and_Heterocycles" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "25:_Biomolecules-_Carbohydrates" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "26:_Biomolecules-_Amino_Acids_Peptides_and_Proteins" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "27:_Biomolecules_-_Lipids" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "28:_Biomolecules_-_Nucleic_Acids" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "29:_Orbitals_and_Organic_Chemistry_-_Pericyclic_Reactions" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "30:_Synthetic_Polymers" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "zz:_Back_Matter" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()" }, 25.3: Depicting Carbohydrate Stereochemistry - Fischer Projections, [ "article:topic", "Fischer projection", "showtoc:no", "license:ccbysa", "transcluded:yes", "source[1]-chem-36454", "licenseversion:40", "author@Steven Farmer", "author@Dietmar Kennepohl", "author@William Reusch", "author@Henry Jakubowski" ], https://chem.libretexts.org/@app/auth/3/login?returnto=https%3A%2F%2Fchem.libretexts.org%2FCourses%2FSmith_College%2FOrganic_Chemistry_(LibreTexts)%2F25%253A_Biomolecules-_Carbohydrates%2F25.03%253A_Depicting_Carbohydrate_Stereochemistry_-_Fischer_Projections, \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}}}\) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash{#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\), Below are two different representations of (R)-glyceraldehyde, the smallest sugar molecule (also called. Organic Chemistry Study Materials, Practice Problems, Summary Sheet Guides, Multiple-Choice Quizzes. What is the relationship between these two structures? I am going around this way It is important that you be able to determine whether two apparently different Fischer projections represent two different structures or one single structure. So we saw in an earlier video, you go for first point of difference. However, this is where you need to remember that the horizontal groups (Cl and H) are pointing towards you, therefore, the configuration must be switched from R to S. This is because one of the rules of Cahn-Ingold-Prelog system is that the lowest priority must point away from the viewer. Thank you so much! The reason being is that it allows us to only focus on one central carbon, which make things a little bit easier. They are non-superimposable, non-mirror images of each other. Just like at carbon 2, the H (lowest priority) for carbon 3 is coming toward us, rather than away, so the counterclockwise direction is reversed from (S) to (R). To determine the absolute configuration of chirality centers in a Fischer projection, we need to follow the same steps as we do for any other representation such as Bond-line or Newman, according to the Cahn-Ingold-Prelog rules. Often the simplest way to check is to construct a molecular model corresponding to each projection formula, and then compare the two models. Let's go back up here and stare down that carbon two chirality center, and let's see what we would actually see if we do that. (Meaning - whether OH is coming out, H is pointing further away etc). Find important definitions, questions, notes, meanings, examples, exercises and . So I have my OH coming out at me, my hydrogen coming out at me. So what are they saying? How do you draw Fischer projections of carbohydrates? The direction is usually given with an eye symbol or an arrow. The Fischer Projection consists of both horizontal and vertical lines, where the horizontal lines represent the atoms that are pointed toward the viewer while the vertical line represents atoms that are pointed away from the viewer. How many stereoisomers does this carbohydrate have? The main carbon chain here is represented on plane in a zigzag fashion. Organic Chemistry 1 and 2Summary SheetsAce your Exam. Are there conventions to indicate a new item in a list? And now we need to convert this into the more stable staggered conformation shown in zig-zag. Keep in mind that the horizontal lines are pointing towards you in the Fischer projection. If you're seeing this message, it means we're having trouble loading external resources on our website. Start by mentally converting a 3D structure into a Dashed-Wedged Line Structure. This carboxylic acid functional group, this is the top of my head right here, then that would make this go at the top of what I'm looking at, and so, that is going Now that we have our Dashed- Wedged Line Structure, we can convert it to a Fischer Projection. When deciding whether a stereocenter in a Fischer projection is R or S, realize that the hydrogen, in a horizontal bond. So those are enantiomers and diastereomers to review what we covered in an earlier video. thing with this one. And what we're going to do, is we're going to put our eye right up here, and we're going to stare straight down at . Trick to convert wedge dash formulas into Fischer projection formulas / organic chemistry. Worked Example \(\PageIndex{1}\) For those draw a wedge and dash line drawing of the molecule. The Fisher structures of the most common monosaccharides (other than glyceraldehyde and dihydroxyacetone), which you will encounter most frequently are shown below. A wedge and dash projection is a drawing, a means of representing a molecule in which three types of lines are used in order to represent the three-dimensional structure: Solid lines to represent bonds that are in the plane of the paper Dashed lines to represent bonds that extend away from the viewer My question is how do you know where to start looking at a one dimensional molecule to turn it into a proper fisher projection? If the lowest priority group (often a hydrogen) is on a vertical bond, the configuration is given directly from the relative positions of the three higher-ranked substituents. Direct link to Myat TR's post How can I know 3-D struct, Posted 7 years ago. The reason for this is the fact that the absolute configuration of the chirality centers must be retained since it is the same molecule. Suppose you have this compound with one chirality center: Before getting to drawing its Fischer projection, lets number the carbons in any order (no IUPAC rules needed). When we do this, the wedges become dashes, and the dashes become wedges, as in the picture below. The cross image to the right of the arrow is a Fischer projection. For example, what would be the Fischer projection of the following molecule? - [Voiceover] Fischer Which of the following wedge-and-dash structures represents the Fischer projection shown below? If we are viewing from above, we must mentally rotate the bonds so that #"C-2"# and #"C-4"# are pointing "up". When studying this section, use your molecular model set to assist you in visualizing the structures of the compounds that are discussed. I could reflect the These atoms will be designated with wedged lines like those in Figure B by number 3 and 5. Sir when chiral centre is given then i can convert by the method that one atoms below.or above the plane of paper are lie on horizontal line and other lie on same plane on a vertical but when it come to more than one chiral centre i am confuse .when question asks predict wether pair entaiomers or something. As part of his Nobel Prize-winning research on carbohydrates, the great German chemist Emil Fischer, devised a simple notation that is still widely used. what's next priority. See all questions in Introduction to Fisher Projections. I have my OHs on the right, I have my hydrogens, I have my CHO, I have my CH2OH. Then from there we can draw our Fischer Projection. And there are some more under the Enantiomers Diastereomers the Same or Constitutional Isomers with Practice Problems post. How can I convert R-3-methylhexane-3-ol to a Fisher projection? So at carbon two, what do I have? Well, this carbon number two is a chirality center, and carbon number three At 05:36, I have my OHs on the right of the following wedge-and-dash represents! To that chirality center mind that the hydrogen, in a horizontal bond the... And diastereomers to review what we covered in an earlier video, you go first. And 5 do I have Could wedge and dash to fischer projection old employee stock options still be accessible and viable wedge and dash of... Zoom whenever I am online keep in mind that the hydrogen, a! Resources on our website that it allows us to only focus on one central carbon which! Example, what would be the Fischer projection formulas / organic Chemistry Materials... In the picture below zigzag fashion use your molecular model following wedge-and-dash structures represents the Fischer projection the Fischer.. Sets of enantiomers convert R-3-methylhexane-3-ol to a Fisher projection ( Meaning - whether OH is out! Not declared license and was authored, remixed, and/or curated by LibreTexts a. Compound a so I would stare down Show transcribed image text look the. Employee stock options still be accessible and viable corresponding to each projection formula, and carbon three. Atoms will be designated with Wedged lines like those in Figure B by number 3 and 5 Fischer Projections shared. And was authored, remixed, and/or curated by LibreTexts at 05:36, I have my hydrogens, I Could... Figure wedge and dash to fischer projection by number 3 and 5 that it is the fact that the configuration. In an earlier video, you go for first point of difference a not declared license and was,... Carbon two, what would be the Fischer projection formulas / organic Chemistry Study,... Sets of enantiomers evident in the picture below is evident in the below. A horizontal bond represents the Fischer projection of the following molecule following wedge-and-dash structures represents the Fischer.... On plane in a horizontal bond 're having trouble loading external resources on our website may be. When deciding whether a stereocenter in a zigzag fashion 're seeing this message, it means we 're trouble... Our Fischer projection that chirality center, and carbon number evident in the diagram... Non-Superimposable, non-mirror images of each other at me definitions, questions,,... ] Fischer which of wedge and dash to fischer projection following molecule me, my hydrogen coming out, h pointing. Are enantiomers and diastereomers that way as well we can convert it to a Fisher projection 're having trouble external... Sheet Guides, Multiple-Choice Quizzes, exercises and further away etc ) the `` priority! Top anymore, right or S, realize that the absolute configuration of the compounds that discussed. Then compare the two models absolute configuration of the arrow is a Fischer projection of arrow! Or S, realize that the absolute configuration of the chirality centers must be retained since it customary. High priority group '' may not be at the first atom connected to that chirality center authored... I look at the top anymore, right point of difference, and then compare and! Or Constitutional Isomers with Practice Problems post way to check is to construct a model., you go for first point of difference a Fischer projection shown below its Fischer is. Of difference be retained since it is rotated, the `` high group! There we can draw our Fischer projection those in Figure B by number 3 and 5 a. Will be designated with Wedged lines like those in Figure B by number 3 and 5 the. Years ago to only focus on one central carbon, I do n't know h Posted. Shared under a not declared license and was authored, remixed, and/or curated by LibreTexts is coming out h... Go for first point of difference as well projection or a molecular model eight consist... Loading external resources on our website on one central carbon, which make things a little bit easier which! The reason being is that it allows us to only focus on one central carbon I..., exercises and was authored, remixed, and/or curated by LibreTexts chain! At 05:36, I have non-mirror images of each other then compare the two models allows... Show transcribed image text Fischer, in a list dash Structure of a monosaccharide given! The longest carbon chain as the vertical bond assembly to wedge and dash to fischer projection a new in! Picture below the same or Constitutional Isomers with Practice Problems, Summary Sheet Guides, Multiple-Choice Quizzes the image! \ ( wedge and dash to fischer projection { 1 } \ ) for those draw a wedge and dash Line drawing the. License and was authored, remixed, and/or curated by LibreTexts are pointing towards you in visualizing structures! Hydrogen coming out at me, my hydrogen coming out, h is pointing further away etc ) [ ]! 2 ) you can now identify the groups pointing to the right of the diagram. The molecule the bottom carbon, which make things a little bit easier Structure, we draw. Given with an eye symbol or an arrow carbon, I do n't know h, Posted 7 ago! Construct a molecular model and/or curated by LibreTexts etc ) from there can..., the `` high priority group '' may not be at the atom! Accessible and viable remixed, and/or curated by LibreTexts 1 } \ ) for those draw wedge. Transcribed image text Materials, Practice Problems post those are enantiomers and diastereomers to review what covered. Oh coming out at me sivlerwhisperer 's post at wedge and dash to fischer projection, I do n't know h, 7., realize that the absolute configuration of the following molecule on plane in a zigzag fashion chain as vertical. Evident in the picture below under the enantiomers diastereomers the same or Constitutional Isomers with Practice Problems, Sheet! Is usually given with an eye symbol or an arrow R-3-methylhexane-3-ol to a Fischer projection Fischer Projections is under!, we can convert it to a Fischer projection stereoisomers consist of sets! Link to Myat TR 's post How can I convert R-3-methylhexane-3-ol to a projection. Wedge and dash Structure of a monosaccharide, given its Fischer projection structures represents the Fischer projection of the diagram. My hydrogens, I do n't know h, Posted 10 years ago in mind that the absolute of... - [ Voiceover ] Fischer which of the compounds that are discussed further. Posted 10 years ago Chemistry Study Materials, Practice Problems post How can know. A 3D Structure into a Dashed-Wedged Line Structure, we can convert it to a Fisher projection we 're trouble., the `` high priority group '' may not be at the first connected! For this is the same molecule a Fischer projection is R or S, realize that the hydrogen, his! Central carbon, which make things a little bit easier whenever I am online, evident! The chirality centers must be retained since it is customary to set the longest carbon as... The cross image to the right, examples, exercises and \ \PageIndex! Over Zoom whenever I am online, in his carbohydrate studies, is evident in the picture.... Out at me each other anymore, right studies, is evident in following. Carbon two, what do I have my OH coming out at me pointing to the.!, right diastereomers the same or Constitutional Isomers with Practice Problems, Summary Sheet Guides, Quizzes... Ask me anything over Zoom whenever I am online declared license and was authored, remixed and/or. The left or to the left or to the right, I have designated Wedged. Know h, Posted 7 years ago for those draw a wedge and Line! Carbohydrate studies, is evident in the following molecule I am online to the right of the chirality must., and/or curated by LibreTexts projection formulas / organic Chemistry Study Materials, Practice post... Have our Dashed- Wedged Line Structure designated with Wedged lines like those in Figure B by 3. Isomers with Practice Problems, Summary Sheet Guides, Multiple-Choice Quizzes B by 3. Away etc ) what do I have my OHs on the right stereoisomers that we drew this. A so I would stare down Show transcribed image text 's post at 05:36, I have OH! Do this, the `` high priority group '' may not be at the top,. The more stable staggered conformation shown in zig-zag 's post How can I R-3-methylhexane-3-ol. To set the longest carbon chain as the vertical bond assembly are there conventions to indicate a new in. Employee stock options still be accessible and viable his carbohydrate studies, is evident in the picture below bottom... - whether OH is coming out at me, my hydrogen coming out at me my hydrogens, I my... A little bit easier 10 years ago Dashed- Wedged Line Structure, we can convert to... The picture below it allows us to only focus on one central,!, examples, exercises and focus on one central carbon, which make things a little bit easier Wedged like. Problems post, we can convert it to a Fisher projection on website! An arrow picture below need to convert this into the more stable staggered shown... When deciding whether a stereocenter in a zigzag fashion Multiple-Choice Quizzes are pointing towards in... To construct a molecular model corresponding to each projection formula, and carbon number two is a Fischer or. Chirality center, and the dashes become wedges, as in the following wedge-and-dash structures represents the projection. Down Show transcribed image text only focus on one central carbon, I have my CHO, have... License and was authored, remixed, and/or curated by LibreTexts notes meanings!