An investigation of structure-reactivity relationships of δ-alkenyl oximes; competitive thermal reactions leading to cyclic nitrones and/or N-unsubstituted bicyclic isoxazolidines
作者:Linda Doyle、Frances Heaney
DOI:10.1016/j.tet.2010.06.005
日期:2010.8
Thermal reactions of C-aryl δ-alkenyl oximes give N-unsubstituted bicylic lactone, lactam and pyrrolidine fused isoxazolidines by an intramolecular oxime olefin cycloaddition pathway (IOOC) and/or cyclic nitrones by an azaprotio cyclotransfer (APT) route; a number of factors, including the nature of the aryl group, the oxime geometry and the structure of the linker between the oxime and the terminal
C-芳基δ-烯基肟的热反应通过分子内肟环烯烃加成途径(IOOC)和/或通过氮杂苯丙氨酸环转移(APT)途径的环状硝酮,产生N-未取代的双环内酯,内酰胺和吡咯烷稠合的异恶唑烷;许多因素,包括芳基的性质,肟的几何形状以及肟和末端烯烃之间的连接基的结构,都对竞争产生了影响。