NBS Catalyzed One-pot Multicomponent Reaction for Efficient Synthesis of 4H-benzo[b]pyran Derivatives in Water Media
会议名称：《有机合成创新—产业化的新动力——中国化学会全国第三届有机合成化学与过程学术讨论会》
会议日期：2010年
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学]
基 金：National Natural Science Foundation of China,contract grant number:20672046 Contract grant sponsor:Guangdong Natural Science Foundation.Contract grant number:8151063201000016
关 键 词：tetrahydrobenzo[b]pyran NBS catalysis aqueous medium
摘 要：The syntheses of 4H-benzo[b]pyran derivatives have attracted great interest due to biological and pharmacological activities,NBS is a commercially available cheap compound that can be used in the laboratory without any special *** reagent has been employed as a versatile catalyst for organic synthesis,such as condensations of indoles with carbonyl compounds,trimethylsilylation of alcohols, aziridination of olefins,and preparation of 1,5-benzodiazepine derivatives,etc.