JEE Main 2022 · 29 Jun · Shift 2 · Chemistry Q73

ChemistrySingle correct+4 / -1Question 73 of 90

Which of the following carbocations is most stable?

Small methoxy-substituted carbocation (structure A)

Methoxy-substituted dienyl cation (structure B)

H3CO-CH2-CH=CH-CH2+ (structure C)

H3CO-CH=CH-CH=CH-CH2+ (structure D)

Answer and worked solution

Official answer: D

Most delocalised. In D the methoxy lone pair is conjugated through two C=C bonds to the cationic carbon, spreading the charge most.

(D)

JEE Main 2022 · 29 Jun · Shift 2, Chemistry question 73