PROCESS FOR THE PREPARATION OF DIPHENYLMETHANE MONO AND DICARBAMATES AND POLYMETHYLENE POLYPHENYL CARBAMATES BY THE ACID REARRANGEMENT OF AN (ALKOXYCARBONYL)PHENYLAMINO-METHYLPHENYL COMPOUND

摘要

PROCESS FOR THE PREPARATION OF DIPHENYLMETHANEMONO AND DICARBAMATES AND POLYMETHYLENE POLYPHENYLCARBAMATES BY THE ACID REARRANGEMENT OF AN(ALKOXYCARBONYL)PHENYLAMINOMETHYLPHENYL COMPOUNDABSTRACT OF THE DISCLOSUREDiphenylmethane mono and dicarbamates and poly-methylene polyphenyl carbamate homologs and derivativesof these compounds are produced by the protonic or Lewisacid catalyzed rearrangement of an (alkoxycarbonyl)phenyl-aminomethylphenyl compound having the general formulaincluding the higher homologs of such compounds, whereinx, y and z, which are different on the ring, are an alkylgroup having from 1 to 3 carbon atoms, an -NHCOOR,-CH2ArNHCOOR or -N(COOR)CH2Ar group; x, y and z may alsobe at least one hydrogen; R is a 1 to 3 carbon alkylgroup and Ar is phenyl which may be substituted with a 1to 3 carbon atom alkyl group.1.