The major product in the following reaction is: electrolysis · ABC26OR0398
Subject: Organic Chemistry · Chapter: Reagents, Reaction Mechanisms & Named Reactions · Topic: Named Reactions · Exam: CSIR NET 2019 · Marks: 2 · Difficulty: Medium
The major product in the following reaction is: 
electrolysis
electrolysis(a)
(b)
(c)
(d)
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation misidentified the radical as α-methoxy-α-CF3; the radical formed by decarboxylation is the CH2 radical β to the ketal carbon. Key B unchanged.
Explanation
Kolbe electrolysis (Pt anodes, undivided cell): the carboxylate MeO₂C(CF₃)C–CH₂–COO⁻ is oxidised at the anode and loses CO₂. This gives the primary radical •CH₂–C(OMe)₂CF₃.
Two such radicals dimerise (head-to-head), giving CF₃C(OMe)₂–CH₂CH₂–C(OMe)₂CF₃, the symmetrical bis(dimethyl ketal).
Answer: (b)Study loop for Reagents, Reaction Mechanisms & Named Reactions