mark eliot practice problems

Question 1

is it called when one enantiomer is favoured over the other

Answer 1

enantioselective

Question 2

if were told that an enantiomer is made 98%,, whats the enantiomeric excess

Answer 2

98-2 = 96% excess

Question 3

how can we make a reaction stereoselective

Answer 3

use a chiral auxiliary // chiral catalyst // chiral oxidising agent to create a diastereomer ,, which have different energies and therefore different rates of reaction and energy.

Question 4

2 enantiomers with 1 chiral centre that is formed once the reaction is done have what energy profile

Answer 4

same energy sm + pro

different energy transition states