Metal-free transannulation reaction of indoles with nitrostyrenes: a simple practical synthesis of 3-substituted 2-quinolones
作者:Alexander V. Aksenov、Alexander N. Smirnov、Nicolai A. Aksenov、Inna V. Aksenova、Liliya V. Frolova、Alexander Kornienko、Igor V. Magedov、Michael Rubin
DOI:10.1039/c3cc45696j
日期:——
3-Substituted 2-quinolones are obtained via a novel, metal-free transannulation reaction of 2-substituted indoles with 2-nitroalkenes in polyphosphoric acid. The reaction can be used in conjunction with the Fisher indole synthesis offering a practical three-component heteroannulation methodology to produce 2-quinolones from arylhydrazines, 2-nitroalkenes and acetophenone.
A palladium-catalyzedcarbonylative cyclization of benzylchlorides with o-nitrobenzaldehydes has been developed for the synthesis of 3-arylquinolin-2(1H)-ones. Mo(CO)6 played a dual role as both a CO surrogate and a reductant in this carbonylative transformation.
已经开发了钯催化的苄基氯与邻硝基苯甲醛的羰基化环化反应,用于合成 3-芳基喹啉-2(1 H )-酮。Mo(CO) 6在该羰基化转化中扮演着CO替代物和还原剂的双重角色。