1.) Name this molecule and identify and assign a configuration if there are chiral centers.a) (25, TR)-9-chloro-2,7-diethyl nonaneb.) (25, 6R,7R) - 2-chloro-6,7-diethyl-8-methylnonanec.) (2R, 65, 75)-2-chloro- 6,7-diethyl - 8-methyl nonaned.) (25, 65, 75)-9-chloro-3,4-diethyl octane

Let us go through each option and determine the correct name and configuration for the molecule:a)…

Answered: 1.) Name this molecule and identify and…

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter12: Chirality

Section: Chapter Questions

Problem 27CTQ

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4. - Determine the structural relationship between the compounds in each of the pairs that follow. They may be unrelated, identical (the same compound), constitutional isomers, diastereoisomers, enantiomers? - Identify the optically active (chiral) compounds and any meso compounds. - Assign a configuration (R or S) to all stereocenters. - Name all compounds so that the name reflects the structure unambiguously. a) b) c) d) e) f) H- HO- CHO H3C -NH₂ H- -H H- CH2OH H CH3 CH3 H Ph H CH3 H H CI Ph H H CI CH3 CH₂OH -OH -NH₂ CI H H CI & t OH CHO H3C H OH O-CH3 oma O-CH3 H3C OH
5) relationship between the pairs of structures. NOTE: Each term may be used more than Choose the term from the five terms listed below that BEST describes the once and not all terms need be used. Identical Diastereomers Enantiomers Constitutional isomers Not isomers CH3 CH3 ÇI H3C-Br CH3 Br -CI H,C. D-H H3C- Br H- -D Br CH3 -CI ČH3 OH H3C, CHO OHC, OH OH H. HO CHO OHC CH3 H. OH ÓH
3. For ONE of the following molecules, redraw the molecule and indicate on your drawing: CI NH (1) all the n-bonds (circle these). (ii) any atoms that are chiral (stereogenic) (mark with an asterisk * AND a number 1, 2, 3, etc.) (iii) the absolute configuration of any chiral (stereogenic) centres marked in (ii) above.
For the list of molecules, indicate if there is an internal mirror plane and if they are chiral. 1. cis-1,3- dimethylcyclobutane 2. trans-1,3- dimethylcyclobutane 3. cis-1,2- dimethylcyclobutane 4. trans-1,2- dimethylcyclobutane 5. 2-butanol 6. Meso-2,3 butanediol 7. Glycine (aminoacetic acid) 8. L-proline 9. Isoleucine 10. 1,3 dichloro-allene (C3 H2 Cl2 )
Draw tartaric acid - 2,3-Dihydroxybutanedioic acid (-dioic means two carboxylgroups), how many stereo isomers will this molecule have? How many of these isomers will be chiral?
assign the stereochemical configuration of the selected tetrahedral carbon chiral centers (R, S or N (not a chiral center)) and the alkene (E, Z or N (not a stereocenter)) that are indicated by the arrows (note that you do not have to assign the configuration of every chiral center in the molecule). If the atom in question is not a chiral center or is not a stereocenter circle N for neither.
(a) (1R,2R)-1,2-dibromocyclohexane, star (*) each chiral center.
Please complete the following related questions i) Draw all possible isomers for the chemical formula Ma3bcd.How many are there in total? How many pairs of enantiomers are there?ii) Repeat for formula Ma3b2c.
5) Draw the following molecules from their given names, determine if they are chiral or meso. a) (1R,25,3R,4S)-1,2-dichloro-3,4-dimethylcyclobutane b) (2R,3S)-2,3-dimethylcyclohexanone c) (1R,3S)-1,3-difluorocyclopentane d) (1S,3S)-1,3-difluorocyclopentane
Which of the following compounds has a stereoisomer that is a meso compound? (I) 1,2- dibromocyclohexane, (II) 1,4-dibromocyclohexane, (III) 2,3-dibromobutane, (IV) 2,3-dimethylbutane, (V) 3,4-dimethylhexane. Recall that an achiral species is one that just contains an internal plane of symmetry. However, a meso compound has two or more asymmetric centers and an internal plane of symmetry. I only O l and II I and III I, III, and V O IV only
Identify the type of configurational isomerism that exist for each double bond or chiral carbon in the structure. Use E-Z system for A and R and S system for B.
There are four dimethylcyclopropane isomers. (a) Write three-dimensional formulas for these isomers. (b) Which of the isomers are chiral? (c) If a mixture consisting of 1 mol of each of these isomers were subjected to simple gas chromatography, how many fractions would be obtained and which compounds would each fraction contain? (d) How many of these fractions would be optically active? tod o ors brie page 10 of 17

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1.) Name this molecule and identify and assign a configuration if there are chiral centers. a) (25, TR)-9-chloro-2,7-diethyl nonane b.) (25, 6R,7R) - 2-chloro-6,7-diethyl-8-methylnonane c.) (2R, 65, 75)-2-chloro- 6,7-diethyl - 8-methyl nonane d.) (25, 65, 75)-9-chloro-3,4-diethyl octane