Selective Reduction of an Aromatic Nitro Group to an Azoxy Unit in the Presence of an Aliphatic Nitro Group
作者:Ulrich Siemeling、Thomas T�rk、Udo Vorfeld、Heinrich Fink
DOI:10.1007/s00706-002-0549-9
日期:2003.2.1
Chemoselective reduction of 1-nitro-2-(2-nitro-2-methylpropyl)-benzene to 2,2′-di-(2-nitro-2-methylpropyl)-azoxybenzene was achieved with sodium borohydride in methanol in the presence of substoichiometric amounts of bismuth, whereas reduction with zinc in hydrochloric acid gave a mixture of the latter, 1-amino-2-(2-amino-2-methylpropyl)-benzene, and 3,3-dimethyl-3,4-dihydrocinnoline, and showed poor
在甲醇存在下,用硼氢化钠在甲醇中将1-硝基-2-(2-硝基-2-甲基丙基)苯化学选择性还原成2,2'-二-(2-硝基-2-甲基丙基)-乙氧基苯。铋的化学计量不足,而在盐酸中用锌还原则得到后者的混合物,分别是1-氨基-2-(2-氨基-2-甲基丙基)-苯和3,3-二甲基-3,4-二氢肉桂碱,并且再现性差。single氧基苯的晶体结构通过单晶X射线衍射测定。