Preparation of carbamates from aromatic amines and organic carbo

Details Preparation of carbamates from aromatic amines and organic carbo Preparation of carbamates from aromatic amines and organic carbo

1980-02-25

1981-05-19

Trousof, Natalie

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

Organic compounds

Carboxylic acid esters

560 25, 560 26, 560 27, 560 28, 560 29, 560 32, 252431C, 252475, 252461, C07C125065, C07C125067, C07C125073, C07C125075

Patent

active

042686849

ABSTRACT:
Carbamates are prepared from organic carbonates and aromatic amines in the presence of zinc, tin or cobalt salts of monovalent organic compounds having a pKa value of less than 2.8 and compounds having more than one carboxyl group per molecule and oxides, sulfides and carbonates at a temperature of at least 200.degree. C.

REFERENCES:
patent: 3763217 (1973-10-01), Brill
patent: 3895054 (1975-07-01), Zajacek et al.
patent: 3919279 (1975-11-01), Rosenthal et al.
patent: 3919280 (1975-11-01), Rosenthal et al.
patent: 3962302 (1975-06-01), Rosenthal et al.
Mukai et al., Chem. Absts., 87, 5 2961(E), 1977.
Olah, Friedel-Crafts and Related Reactions, vol. 1, Interscience Publishers, pp. 288-291 (1963).

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