A New Approach to 2,3-Dihydro-1H-1,5-Benzodiazepines from the Reaction of o-Nitrophenylazide with α,β-Unsaturated Ketones Promoted by Samarium Diiodide
Xiao Yuan CHEN3,Wei Hui ZHONG1,Yong Min ZHANG*,1,2 1Department of Chemistry,Zhejiang University at Xixi Campus,Hangzhou 310028 2Laboratory of Organometallic Chemistry,Chinese Academy of Sciences,Shanghai 200032 3Department of Chemistry,Hunan Jisho
摘 要:
Applications of samarium diiodide as a mild, neutral, selective and versatile single-electron transfer reducing and coupling reagent in organic synthesis have grown significantly in the last decade1. It is well known that both nitro compounds2a and azide compounds2b can be easily reduced by SmI2 to the corresponding amines. Little attention has been given to the intermediates derived from nitro or azide groups by treatment of SmI2, which may lead to reactions difficult to accomplish by other …