Question

4. (a) Give an example of a molecule with enantiomorphic groups along with pro-R and pro-S hydrogen
atoms on a pro-pscudoasymmetric centre.
(b) Between p-chlorophenol and p-fluorophenol which one is a stronger acid and why? ​

Answer 1

Answer:

(a) When a tetrahedral carbon can be converted to a chiral center by changing only one of the attached groups, it is referred to as a ‘prochiral' carbon. The two hydrogens on the prochiral carbon can be described as 'prochiral hydrogens

(b) When we draw the resonating structures of the conjugate base of both p-chlorophenol and p-fluorophenol , we will see that p-chloro phenoxide ion will have extra resonance structure. ... Hence ,the conjugate base of p- chlorophenol is more stable and hence more acidic. -p-chlorophenol is more acidic than p-fluorophenol.

Explanation:

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