An Approach toward Azacycles Using Photochemical and Radical Cyclizations of <i>N</i>-Alkenyl Substituted 5-Thioxopyrrolidin-2-ones
作者:Albert Padwa、Martin N. Jacquez、Andreas Schmidt
DOI:10.1021/jo035127w
日期:2004.1.1
thioxaphthalimido system containing an N-cycloalkenyl group in the side chain gave rise to products derived by γ-hydrogen abstraction from the n−π* triplet excited state. The photobehavior of the related N-3-alkenyl pyrrolidine-2,5-dithione system (62) was also studied and found to give products derived from both a 2 + 2cycloaddition (63) and hydrogen atom transfer (64). Finally, the reaction of several N-alkenyl