Reaction of aromatic diamines with diphenylcarbonate catalyzed by phosphorous acids: a new clean synthetic route to mono- and dicarbamates
作者:Michele Aresta、Angela Dibenedetto、Eugenio Quaranta
DOI:10.1016/s0040-4020(98)00873-4
日期:1998.11
In the presence of organophosphorus acids [Ph2P(O)OH, (PhO)2P(O)OH, (BuO)2P(O)OH, (BuO)P(O)(OH)2], aromatic diamines, such as 4,4′-methylendianiline (MDA) or 2,4-diaminotoluene (TDA), react with diphenylcarbonate (DPC) to afford in a very selective way mono- and dicarbamate phenyl esters. The carbamation process is strongly influenced by the temperature and solvent. The influence of both these factors
在有机磷酸[Ph 2 P(O)OH,(PhO)2 P(O)OH,(BuO)2 P(O)OH,(BuO)P(O)(OH)2 ]的存在下,芳族二胺,例如4,4'-甲基二苯胺(MDA)或2,4-二氨基甲苯(TDA)与碳酸二苯酯(DPC)反应,以非常选择性的方式提供单氨基甲酸酯和二氨基甲酸酯苯基酯。氨基甲酸酯化过程受温度和溶剂的强烈影响。已经研究了这两个因素对氨基甲酸酯收率和选择性的影响,我们在本研究中介绍了单氨基甲酸酯和二氨基甲酸酯的形成动力学。