Indoles from 3-nitropyridinium salts: A new route to chiral indoles and indolines
作者:Alexander V Karchava、Marina A Yurovskaya、Thomas R Wagner、Boris L Zybailov、Yuri G Bundel
DOI:10.1016/0957-4166(95)00379-7
日期:1995.12
(S)-1-(1-Methylbenzyl)-2,4,6-trimethylindole was prepared by interaction of (S)isopropyliden(1-methylbenzyl)amine with 1,2,4,6-tetramethyl-3-nitropyridinium iodide. The indoles thus prepared undergo diastereoselective hydride reduction and debenzylation to afford chiral (S)-2,4,6-trimethylindoline with high yield and optical purity up to 76%.