首页>
外国专利>
A method for the production of diphenylmethane - mono - and - dicarbamates and polymethylene - poly phenyl carbamates
A method for the production of diphenylmethane - mono - and - dicarbamates and polymethylene - poly phenyl carbamates
展开▼
机译:一种生产二苯甲烷一和二氨基甲酸酯和聚亚甲基聚苯基氨基甲酸酯的方法。
展开▼
页面导航
摘要
著录项
相似文献
摘要
Diphenylmethane mono and dicarbamates and polymethylene polyphenyl carbamate homologs and derivatives of these compounds are produced by the protonic or Lewis acid catalyzed rearrangement of an (alkoxycarbonyl) phenylamino methylphenyl compound having the general formula IMAGE (or a higher homolog of such a compound) wherein each of x, y and z, which may be different in each ring, is a hydrogen atom, an alkyl group having from 1 to 3 carbon atoms, an -NHCOOR, -CH2ArNHCOOR or -N(COOR)CH2Ar group, R is a 1 to 3 carbon alkyl group and Ar is phenyl which may be substituted with a 1 to 3 carbon atom alkyl group.
展开▼