作者:W. Russell Bowman、Peter T. Stephenson、Nicholas K. Terrett、Adrian R. Young
DOI:10.1016/0040-4020(95)00412-2
日期:1995.7
Radical cyclisation of sp3 carbon-centred radicals onto imines and hydrazones provides a new method for the synthesis of 5- and 6-membered ring nitrogen heterocycles. Cyclisation onto the electrophilic carbon of the C=N group and 5-exo stereoelectronic selectivity are the dominating mechanistic parameters. The C-centred radical intermediates were generated from benzeneselenyl precursors using Bu3SnH
sp 3碳中心自由基在亚胺和上的自由基环化为合成5和6元环氮杂环提供了一种新方法。到C = N基团的亲电子碳上的环化和5 exo立体电子选择性是主要的机械参数。使用Bu 3 SnH由苯硒基前体生成C中心自由基中间体。