Tetrahedron Letters p. 7291 - 7294 (1993)
Update date:2022-08-03
Topics:
Booker-Milburn, Kevin I.
Thompson, David F.
Conjugate addition of a variety of Grignard reagents to 2-cyclopentenone followed by cyclopropanation of the resulting enol ethers gave a range of substituted cyclopropyl silyl ethers in good yield. Treatment of these cyclopropyl silyl ethers with ferric chloride in DMF gave the one carbon ring expanded β-chloro ketones which were eliminated to the corresponding 4-substituted-2-cyclohexenones.
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