Chemistry Letters

New Intramolecular Five-Endo-Mode Cyclization of Allenyl Aryl Ketones.

Y Nagao, WS Lee, K Kim

文献索引：Nagao, Yoshimitsu; Lee, Woo-Song; Kim, Kweon Chemistry Letters, 1994 , # 2 p. 389 - 392

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被引用次数: 20

摘要

A convenient preparation of allenyl aryl ketones was achieved by the Weinreb-modified Grignard reaction of N-methoxy-N-methylamides with propargylmagnesium bromide. On treatment with BF 3· OEt 2, the allenyl aryl ketones were converted to methylenebenzocyclopetenones via a new 5-endo-mode cyclization.