2,4-Dinitrobenzenesulfonamides: A simple and practical method for the preparation of a variety of secondary amines and diamines

Autor: Yuko Hidai, Chung-Kuang Jow, Toshiyuki Kan, Mui Cheung, Tohru Fukuyama
Rok vydání: 1997
Předmět:
Zdroj: Tetrahedron Letters. 38:5831-5834
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(97)01334-8
Popis: 2,4-Dinitrobenzenesulfonamides, readily prepared from primary amines and 2,4-dinitrobenzenesulfonyl chloride, can be alkylated by the Mitsunobu reaction or by the conventional methods to give N , N -disubstituted sulfonamides in excellent yields. Since 2,4-dinitrobenzenesulfonamides can be removed without deprotecting 2-nitrobenzenesulfonamides, a wide variety of diamines could be prepared by the combined use of these protecting/activating groups.
Databáze: OpenAIRE