Oxidative Cyclization of Amino Alcohols Catalyzed by a Cp*Ir Complex. Synthesis of Indoles, 1,2,3,4-Tetrahydroquinolines, and 2,3,4,5-Tetrahydro-1-benzazepine
作者:Ken-ichi Fujita、Kazunari Yamamoto、Ryohei Yamaguchi
DOI:10.1021/ol026200s
日期:2002.8.1
oxidative cyclization of amino alcohols has been revealed. Indole derivatives are synthesized in good to excellent yields from 2-aminophenethyl alcohols by means of a [CpIrCl(2)](2)/K(2)CO(3) catalytic system. The present catalytic system is also effective for syntheses of 1,2,3,4-tetrahydroquinolines from 3-(2-aminophenyl)propanols and 2,3,4,5-tetrahydro-1-benzazepine from 4-(2-aminophenyl)butanol.
[反应:见正文]已经揭示了一种新的铱催化的氨基醇氧化环化反应。吲哚衍生物是通过[CpIrCl(2)](2)/ K(2)CO(3)催化系统从2-氨基苯乙醇以极高的产率合成的。本催化体系对于由3-(2-氨基苯基)丙醇合成1,2,3,4-四氢喹啉和由4-(2-氨基苯基)合成2,3,4,5-四氢-1-苯并ze庚因也是有效的。丁醇。