ABC26OR0430 · Reagents Reaction Mechanisms and Named Reactions
Subject: Organic Chemistry · Chapter: Reagents Reaction Mechanisms and Named Reactions · Topic: Reagents, Reaction Mechanisms & Named Reactions – General · Exam: CSIR-NET DEC 2019 · Marks: 2 · Difficulty: Medium
The major product A and the byproducts B formed in the following reaction are 
(a)
$mathrm{B}=mathrm{CO}_{2}, mathrm{S}=mathrm{P}(mathrm{OMe})_{3}$
$mathrm{B}=mathrm{CO}_{2}, mathrm{S}=mathrm{P}(mathrm{OMe})_{3}$(b)
$mathrm{B}=mathrm{O}=mathrm{C}=mathrm{S}, mathrm{S}=mathrm{P}(mathrm{OMe})_{3}$
$mathrm{B}=mathrm{O}=mathrm{C}=mathrm{S}, mathrm{S}=mathrm{P}(mathrm{OMe})_{3}$(c)
$mathrm{B}=mathrm{CO}_{2}, mathrm{S}=mathrm{P}(mathrm{OMe})_{3}$
$mathrm{B}=mathrm{CO}_{2}, mathrm{S}=mathrm{P}(mathrm{OMe})_{3}$(d)
$\mathrm{B}=\mathrm{O}=\mathrm{C}=\mathrm{S}, \mathrm{S}=\mathrm{P}(\mathrm{OMe})_{3}$
$\mathrm{B}=\mathrm{O}=\mathrm{C}=\mathrm{S}, \mathrm{S}=\mathrm{P}(\mathrm{OMe})_{3}$Answer
Answer (as printed): A
Explanation
The mechanism of the reaction is shown below:
Explanation as extracted from the printed page; notation may be imperfect.