【摘要】 本文用自由基捕捉剂与ESR相结合的方法系统研究了各种取代苯胺与二苯酮光化夺氢反应中的活泼自由基。找出了形成N—中心及C—中心自由基的条件:即当芳胺有N上氢和α—C上氢时,优先形成N—中心自由基;仅当无N上氢时,才形成C—中心自由基。更多还原

【Abstract】 Active free radicals in the photochemical hydrogen abstraction reaction between benzophenone and aromatic amines have been studied systematically by combination of spin trapping reagents and ESR.The results show that.(l) for primary and secondary amines,benzophenone abstracts H more efficiently from N than from a-C of amines to form N-centered radical (2) for tertiary amines, the abstraction of H is taken place on the a-C of amines to form C-centere dradical更多还原