Indoles, VII 4,9-Dihydropyrano[3,4-b]indol-1(3H)-ones from meta-substituted α-Phenylhydrazono-δ-lactones - Synthesis and Regioselectivity
作者:Jochen Lehmann、Ursula Pohl
DOI:10.1002/ardp.19883211211
日期:——
The indolization of 3a‐f, available by reaction of 1 with the diazonium salts 2a‐f, produces mixtures of position isomers. Significant influences on the ratio 4/5 by electronic of steric effects of the chosen substituents cannot be recognized. Indolization of 6 also gives a mixture ‐ 10 and 11 ‐,on the other hand 9 yields pure 12.
3a-f 的吲哚化作用可通过 1 与重氮盐 2a-f 反应产生,产生位置异构体的混合物。无法认识到所选替代品的空间效应电子对比例 4/5 的显着影响。6 的吲哚化也产生混合物 - 10 和 11 -,另一方面 9 产生纯 12。