KNAPP, SPENCER;GIBSON, FRANK S.;CHOE, YUN H., TETRAHEDRON LETT., 31,(1990) N8, C. 5397-5400
作者:KNAPP, SPENCER、GIBSON, FRANK S.、CHOE, YUN H.
DOI:——
日期:——
Radical based annulations of iodo lactams
作者:Spencer Knapp、Frank S Gibson、Yun H Choe
DOI:10.1016/s0040-4039(00)97856-0
日期:1990.1
N-Alkylation of iodo lactams with reactive alkylhalides, or of the derived selenide lactams with less reactive alkylhalides, leads to substrates for free radical initiated cyclization to pyrrolizidinones and indolizidinones, e. g. 2 → 3. The first examples of iodide / vinyl bromide, selenide / aldehyde, and selenide / vinyl chloride radical cyclizations are described.