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 |
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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 |
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