Method for the preparation of aromatic urethans

Details Method for the preparation of aromatic urethans Method for the preparation of aromatic urethans

1976-11-22

1978-06-27

Trousof, Natalie

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

Organic compounds

Carboxylic acid esters

560133, 560134, 560136, 560137, C07C12504, C07C12506

Patent

active

040976769

ABSTRACT:
Aromatic urethans are prepared by reacting aromatic carbonates with aliphatic amines, within an organic solvent or not. It is preferred that a stoichiometric quantity of the amine be employed to prevent the formation of urea by-products which are likely to be formed if an excess of the amine is used. The temperature should not exceed 100.degree. C, the interval between 20.degree. and 40.degree. C being preferred. Nearly quantitative yields are obtained.

REFERENCES:
Glatthard et al., Helvetica Chimicia Acta., 1963, vol. 46, pp. 795-804.

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