The major product in the following reaction is: 3. MeP(OEt)₂ 4. H₃O⁺ · ABC26OR0424
Subject: Organic Chemistry · Chapter: Reagents, Reaction Mechanisms & Named Reactions · Topic: Named Reactions · Exam: CSIR NET DEC 2019 · Marks: 2 · Difficulty: Medium
The major product in the following reaction is: 3. $\mathrm{MeP(OEt)_2}$ 4. $\mathrm{H_3O^{+}}$
(a)
(b)
(c)
(d)
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
HBr opens the lactone to the γ-bromo acid, MeOH/H⁺ esterifies, Arbuzov with MeP(OEt)₂ installs the methylphosphinate, and acid hydrolysis removes the ester groups and phthalimide: glufosinate, 2-amino-4-(hydroxymethylphosphinyl)butanoic acid (b).
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