Nitration of 3-acylindoles in the presence of MeCN solvates of Cu2+, Al3+, and Fe2+ salts yielded 3-nitroindole, 4-nitro-and 6-nitro-3-acylindoles, of which 3-acetyl-4-nitroindole was subsequently transformed into dehydrochuangxinmycin (7), the dehydro derivative of the antibiotic alkaloid chuangxinmycin (2).
Regioselective nitration of 3-acetylindole and its N-acyl and N-sulfonyl derivatives
作者:Olívia Ottoni、Rosimeire Cruz、Norbert H. Krammer
DOI:10.1016/s0040-4039(98)02636-7
日期:1999.2
3-Acetylindole reacts regioselectively with NO2BF4 in the presence of SnCl4 to produce 3-acetyl-5-nitroindole or 3-acetyl-6-nitroindole, depending an the temperature, both in excellent yields. (C) 1999 Elsevier Science Ltd. All rights reserved.
MURASE, MASAYUKI;KOIKE, TAKESHI;MORIYA, YUKARI;TOBINAGA, SEISHO, CHEM. AND PHARM. BULL., 35,(1987) N 7, 2656-2660