Selective Ring Contraction of 5-Spirocyclopropane Isoxazolidines Mediated by Acids
作者:Franca M. Cordero、Federica Pisaneschi、Maria Salvati、Valentina Paschetta、Jean Ollivier、Jacques Salaün、Alberto Brandi
DOI:10.1021/jo034003g
日期:2003.4.1
The two-step process, intramolecular 1,3-dipolar cycloaddition/thermal rearrangement underacidicconditions, represents a general synthesis of a new class of 3,4-cis-fused bicyclic azetidin-2-ones starting from easily available compounds such as aminoacids, hydroxy acids, and dicarbonyl or amino alcohol derivatives.