Selective Ortho Methylation of Nitroheteroaryls by Vicarious Nucleophilic Substitution
作者:Michał Achmatowicz、Oliver R. Thiel、Gilles Gorins、Corinne Goldstein、Caroline Affouard、Randy Jensen、Robert D. Larsen
DOI:10.1021/jo801131z
日期:2008.9.1
one-pot approach to 6-methyl-5-nitroisoquinoline (1) from inexpensive 5-nitroisoquinoline, utilizing the vicarious nucleophilic substitution (VNS) as a key step, is described. The optimized reaction conditions can be applied to a limited number of other aromatic and heteroaromatic nitro compounds. Attempts to understand the observed selectivity in the VNS step led to the discovery of two new reaction
描述了一种有效且可扩展的三步一锅法,该方法利用替代的亲核取代(VNS)作为关键步骤,从廉价的5-硝基异喹啉制得6-甲基-5-硝基异喹啉(1)。优化的反应条件可以应用于有限数量的其他芳族和杂芳族硝基化合物。试图了解在VNS步骤中观察到的选择性的尝试导致在VNS条件下发现了两个新的反应途径,一个导致异恶唑,另一个导致芳族硝基化合物的正式环丙烷化。