The major product formed in the following reaction sequence is · ABC26OR0698
Subject: Organic Chemistry · Chapter: Reagents, Reaction Mechanisms & Named Reactions · Topic: Reagents, Reaction Mechanisms & Named Reactions – General · Exam: GATE 2000-2022 · Marks: 2 · Difficulty: Medium
The major product formed in the following reaction sequence is 
(a)
X + 
Y
X + Y(b)
(c)
(d)
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
TFA cleaves the t-butyl ester to the acid; one equivalent of BH₃ reduces the carboxylic acid selectively (esters are inert to borane), giving the allylic alcohol while the methyl ester survives (d).
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