T. Fukuyama, Mui Cheung, Chung-Kuang Jow
Aug 18, 1997
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0
Influential Citations
210
Citations
Quality indicators
Journal
Tetrahedron Letters
Abstract
Abstract 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.