Tetrahedron p. 6663 - 6668 (1986)
Update date:2022-08-03
Topics:
Mayr, Herbert
Heilmann, Werner
Lammers, Roswitha
The Lewis acid catalyzed reaction of 5-chloro-1,3-cycloheptadiene 4 with silyl enol ethers yields α-cycloheptadienyl substituted carbonyl compounds in high yield.Since 4 is easily prepared from cycloheptatriene, and the cycloheptadienyl cation 3 is preferably attacked at 3-position, this reaction opens an efficient access to 3-substituted 1,4-cycloheptadienes.
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