Choose the terms that best describe the transformation shown below: OH neither regioselective nor stereospecific stereospecific regioselective O both regioselective and stereospecific OH

Knowing that the stereocenter is S, why does the top circle beat the bottom circle in priority since the top circle is only conected to an OHH and the bottom ciurcle is atttached to a N and a C?

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

Assign 1,2 and 3 configuration S or R

Provide the least stable conformation of the following compound. Cis/trans stereochemistry matters

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

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

Select the correct Newman projection looking down the C2-C3 bond of the below structure. H H₂C O A OB O C D CH₂CH3 CI CH3 A Br CI Br CH₂CH3 H CH₂ H₂C Br CH3 CH₂CH3 H * H₂C Br CH3 C H₂C H CH₂ Br CI CH₂CH3

What is the enantiomer of compound Y? NH2 Compound Y NH2 Br NH, ÑH2 Br ÑH2 Br II II IV NH2 Br Br NH, V VI O lonly O V only O IV only III and V O Il only O VI only Il and II O Il only O None of the above

Assign every stereo center in callyspongiolide as either R or S using CIP notation