2.How many stereoisomers do the following molecules have? Please list each usingthe E/Z labeling, separating them with “or” (only E/Z labels, not their full IUPAC names):a)b)c)

A.) Although there are two double bonds, only one can form E and Z isomers. This is because the…

Answered: 2. How many stereoisomers do the…

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter4: Organic Compounds: Cycloalkanes And Their Stereochemistry

Section4.SE: Something Extra

Problem 61AP: Ketones react with alcohols to yield products called acetals. Why does the all-cis isomer of...

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2. Draw the most stable conformation of the following: (a) trans-1-butyl-3-methylcyclohexane (b) trans-1-t-butyl-4-methylcyclohexane Which isomer is more stable? Why?
5) Use compounds X, Y and Z (shown below) to answer the following questions. H. H3C" "CH3 ОН CH3 compound X compound Y compound Z a) Is compound X classified as cis, trans or neither? b) Is compound Y classified as E, Z or neither? c) Is compound Z classified as R, S or neither? d) Are compounds X and Y constitutional isomers of each other? (YES or NO) e) Are compounds Y and Z constitutional isomers of each other? (YES or NO) f) Classify compound Y as a primary, secondary or tertiary alcohol. g) Which compound(s) is(are) chiral? h) Give the IUPAC name for compound Z, omitting the absolute configuration (R or S) designation. i) In the indicated spaces below, draw stereoisomers of compounds X, Y and Z. stereoisomer of compound X stereoisomer of compound Y stereoisomer of compound Z
4. Draw the most stable conformation for each of the following substituted cyclohexanes; then, in each case, flip the ring and redraw the molecular in the higher energy chair conformation. Shown all conformation in Newman projections. Fill in hydrogens to indicate unsubstituted carbons. a) b) most stable conformation: higher energy conformation: á most stable conformation: higher energy conformation: 3 Da
(a) Draw all stereoisomers formed by monochlorination of the cis and trans isomers of 1,2-dimethylcyclobutane drawn below. (b) How many constitutional isomers are formed in each reaction? (c) Label any pairs of enantiomers formed.
Write the IUPAC name of the following molecule along with E/Z stereochemical descriptors: "Lowercase letters only and DO NOT put space in between. * Your answer
Draw the planar (Haworth) structure for cis-1-ethyl-2- methylcyclohexane. (b) Draw the two ring - flipped chair conformations. (c) Circle the more stable chair conformation (circle both if they are equal in energy). Draw the Haworth structure and the two ring-flipped conformations of 1, 2, 4- trimethylcyclohexane (Compound D) on the frames below, b) Circle the more stable chair conformation (circle both if they are equal in energy). Haworth Structure
For the molecule given, prioritize each substituent on the stereogenic carbon, and assign absolute stereochemistry. Part: 0 / 2 Part 1 of 2 Cl Assign priority to each substituent. -CH,O- - CH3 - CH₂0¹8- - C1 (Choose one) ▼ (Choose one) (Choose one) ▼ (Choose one) ▼ X
Draw both cis- and trans-1,4-dimethylcyclohexane in their more stable chairconformations. (a) How many stereoisomers are there of cis-1,4-dimethylcyclohexane, and how many of trans-1,4-dimethylcyclohexane? (b) Are any of the structures chiral? (c) What are the stereochemical relationships among the various stereoisomers of 1,4-dimethylcyclohexane?
Ketones react with alcohols to yield products called acetals. Why does the all-cis isomer of 4-tert-butyl-1,3-cyclohexanediol react readily with acetone and an acid catalyst to form an acetal, but other stereoisomers do not react? In formulating your answer, draw the more stable chair conformations of all four stereoisomers and the product acetal for each one.
Keppra is a medication used to treat epileptic seizures. Draw the enantiomer of the molecule shown below. Use a dash or wedge bond to indicate the stereochemistry of substituents on asymmetric centers, where applicable. & Sm NH₂ 'N O Drawing a
Consider the following structures: Select the letters a, b, or c corresponding to the terms below: a) Identical b) constitutional isomers c) stereoisomers i) Structures 1 and 2 are: (A, B, C) ii) Structures 1 and 3 are: (A, B, C) iii) Structures 1 and 4 are: (A, B, C)
4. The [a] of pure quinine, an antimalarial drug, is -165°. a) Calculate the enantiomeric excess (EE) of a solution with the following [a] values: -83°. b) Calculate the percent of each enantiomer present. H3CO d) Identify 2 functional groups in quinine HO Hin Quinine (anti-malaria drug) c) What is [a] for the enantiomer of quinine, and does it rotate light clockwise or counterclockwise? (

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2. How many stereoisomers do the following molecules have? Please list each using the E/Z labeling, separating them with “or” (only E/Z labels, not their full IUPAC names): a) b) c)