作者:Rebecca Braslau、Marc O Anderson、Frank Rivera、Armando Jimenez、Terra Haddad、Jonathan R Axon
DOI:10.1016/s0040-4020(02)00490-8
日期:2002.7
The use of acyl hydrazines (hydrazides) as precursors for the stoichiometric generation of acyl radicals is explored. Two classes of substrates are examined: unsubstituted acyl hydrazines and acyl hydrazines substituted with a leaving group (2-nitrobenzenesulfonyl or ‘nosyl’). Both types are successfully converted to acyl radicals, and are then trapped by nitroxide radicals to give acyloxyamine products
探索了使用酰基肼(酰肼)作为化学计量产生酰基自由基的前体。检查了两类底物:未取代的酰基肼和被离去基团(2-硝基苯磺酰基或“ nosyl”)取代的酰基肼。两种类型均成功转化为酰基自由基,然后被氮氧自由基捕获,得到了酰氧基胺产物。对两种类型的底物都证明了环化反应。还开发了McFayden-Stevens反应的低温修饰方法。