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.
可以容易地由
伯胺和2,4-二硝基
苯磺酰氯制备的2,4-
二硝基苯磺酰胺可以通过Mitsunobu反应或通过常规方法进行烷基化,从而以优异的产率得到N,N-二取代的磺酰胺。由于可以在不使2-
硝基苯磺酰胺脱保护的情况下除去2,4-
二硝基苯磺酰胺,因此可以通过组合使用这些保护/活化基团来制备各种各样的二胺。