Rate constants for aryl radical cyclization to aldimines: synthesis of tetrahydroisoquinolines by fast 6-endo closures to carbon
作者:Mirosḱlaw J. Tomaszewski、John Warkentin
DOI:10.1016/0040-4039(92)88156-y
日期:1992.4
Aryl radicals cyclize to an imino functional group in a competition involving 6-endo closure to C and 5-exo closure to N. There is a large 6-endo preference forming tetrahydroisoquinolinyl radicals with k6-endo (80-degrees-C) > 10(8)s-1.