Reactivity of allenoates towards aziridines: synthesis of functionalized methylenepyrrolidines and pyrroles
作者:Fernanda M. Ribeiro Laia、Ana Lúcia Cardoso、Ana Matos Beja、Manuela Ramos Silva、Teresa M.V.D. Pinho e Melo
DOI:10.1016/j.tet.2010.09.081
日期:2010.11
The reactivity of buta-2,3-dienoates towards aziridines is reported. Typically, allenoates react as the 2π-component in the [3+2] cycloaddition with azomethine ylides generated from aziridines, affording 4-methylenepyrrolidines in a site-, regio- and stereoselective fashion. However, N-cyclohexyl- or N-tert-butyl-2-benzoyl-3-phenylaziridines showed a different reactivity in the reaction with buta-2