QuestionOrganic / enolate alkylation, ring size
The major product formed in the following reaction sequence is :
CH₃COCH₂COOEt —(i. NaOEt (2 equiv.); ii. 1,3-dibromopropane)→
- (a) Ethyl 1-acetylcyclobutane-1-carboxylate
- (b) Ethyl 2-oxocyclohexane-1-carboxylate
- (c) Ethyl 3-methyl-5,6-dihydro-4H-pyran-2-carboxylate (ester on the carbon bonded to ring O)
- (d) Ethyl 2-methyl-5,6-dihydro-4H-pyran-3-carboxylate
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