Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5270241 | Tetrahedron Letters | 2010 | 4 Pages |
Abstract
Cyclopropanation of α,β-unsaturated δ-lactams and δ-lactones mediated by nitrogen ylides is described. The process tolerates different alkyl halides and gives efficiently bicyclo[4.1.0]heptanes in a totally stereoselective manner. On the other hand, ε-lactams under our experimental conditions suffer a novel process involving a skeletal reorganization to give a bicyclic[3.3.0] system.
Related Topics
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Authors
Irene Suarez del Villar, Ana Gradillas, Gema DomÃnguez, Javier Pérez-Castells,