Reduction of Indolin-2-ones and Desulfurization of Indoline-2-thiones to Indoline and Indole Derivatives
作者:Takehiko Nishio、Norikazu Okuda、Choji Kashima
DOI:10.1002/hlca.19900730616
日期:1990.9.19
Reduction of indolin-2-ones with lithium aluminium hydride (LAH) or diisobutylaluminum hydride (DIBAL) and desulfurization of indoline-2-thiones with Raney-Ni were investigated. Treatment of indoline-2-ones 1 with LAH or DIBAL yield indoles 4 and/or indolines 3 in moderate-to high yield depending on the substituents at N and C(3) of 1. Indoline-2-thiones 2 were desulfurized with Raney-Ni to give indoles