A novel method for cyclopentanone annulation. The use of 1-(2-ketoalkyl) cyclopropanols to obtain cyclopentanones.
作者:James T. Carey、Paul Helquist
DOI:10.1016/s0040-4039(00)80266-x
日期:1988.1
The condensation of alkyl-substituted thermodynamic enolates with ethyl bromomagnesium cyclopropanonehemiacetal (a cyclopropanone equivalent) provides 1- (2-ketoalkyl) cyclopropanols which in turn are converted into 3-hydroxycyclopentanones by treatment with base.