Transamidation reactions of β-lactams: A synthesis of (±)-dihydroperiphylline
作者:Leslie Crombie、Raymond C.F. Jones、David Haigh
DOI:10.1016/s0040-4039(00)85157-6
日期:1986.1
Whereas ammonolysis of -(halogenoalkyl)azetidin-2-ones affords mediumring azalactams transamidation, large or strained rings are not isolated, acyclic β-amino-amides being produced; two successive transamidative ring expansions from 4-phenyla-zetidin-2-one give a synthesis of (±)-dihydroperiphylline.