Preparation of diphenylmethane mono and dicarbamates and polymet

Details Preparation of diphenylmethane mono and dicarbamates and polymet Preparation of diphenylmethane mono and dicarbamates and polymet

1979-01-24

1979-10-30

Thomas, Jr., James O.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560 27, 260453P, C07C12504, C07C11800

Patent

active

041729480

ABSTRACT:
Diphenylmethane mono and dicarbamates and polymethylene polyphenyl carbamate homologs and derivatives of these compounds are prepared by employing a superatmospheric pressure of anhydrous hydrogen chloride to catalytically rearrange an (alkoxycarbonyl)phenylaminomethylphenyl compound having the general formula ##STR1## INCLUDING THE HIGHER HOMOLOGS OF SUCH COMPOUNDS, WHEREIN X, Y AND Z, WHICH ARE DIFFERENT ON THE RING, ARE AN ALKYL GROUP HAVING FROM 1 TO 3 CARBON ATOMS, AN --NHCOOR, --CH.sub.2 ArNHCOOR or --N(COOR)CH.sub.2 Ar group; x, y and z may also be at least one hydrogen; R is a 1 to 3 carbon atom alkyl group and Ar is phenyl which may be substituted with a 1 to 3 carbon atom alkyl group.

REFERENCES:
patent: 2946768 (1960-07-01), Klauke
patent: 3873553 (1975-03-01), Hearsey
patent: 3919279 (1975-11-01), Rosenthal et al.
patent: 3962302 (1976-06-01), Rosenthal et al.
patent: 4014914 (1977-03-01), Pistor et al.

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