Which of the following chair conformations is the most stable? H H H A B B A is more stable than B if the solvent is polar protic. B is more stable tha the solvent is polar aprotic. A and B have the same stability. A

6:54 Question 27 of 28 Submit What is the relationship between these two sugars? H. СНО H. O- ОН ОН ОН CH2OH CH2OH A) identical structures B) enantiomers C) diastereomers エエ I I

Which of the following are meso compounds? CH3 CH3 CH3 CH3 CH H- CI H CI -H CI- H CI- -CI H- -H H- H H- -H H -H H- -H H- -CI -H H H -CI H- -H CH3 CH3 CH3 CH3 CH3 D E A B

19. Which Newman projection rep- resents the most stable confor- mation of 3-methylpentane when viewed down the 2-3 carbon- carbon bond? A) B) CH3 H CH3 H CH3 H H H CH₂CH3 H CH₂CH3 CH3 C) D) CH3 CH3 CH3 CH3 H H H H CH₂CH3 CH3 CH2CH3 H

Which product(s) would be formed in the reaction below with the chair conformation shown?

Choices a.3 b. 2 c. 4 d. 1

Which set of Newman projections represents correct staggered and the eclipsed least stable conformation for the following compound: Н H3C H тос Н- CH3 H3C O A 000 A ОВ CH3 CH3 Н H Н Å Å Å Å H H Н CH3 H3C CH3 CH3 CH3 CH3 Ос OD H3C H3C- 00 В CH3 H3C Н Н Н CH3 H3C. с Н ___H то H- CH3 CH3 Н- D H3C CH3 Н Н CH3

Label each pair of compounds below as: CH3 CH3 H CI H H and H H H H I CI A conformational isomers B stereoisomers C constitutional isomers D identical

Which Newman projection corresponds to the conformation of this compound that can undergo E2 elimination? Et CI E2 ? H tBu tBu tBu H H Me Et. H Me H CI tBu CI H CI H CI H Me Et Me Et A B D

4.3 Draw the two chair conformations of trans-1-bromo-4-methylcyclohexane. Brill CH3