Process for the preparation of aromatic urethanes

Details Process for the preparation of aromatic urethanes Process for the preparation of aromatic urethanes

1977-11-15

1979-08-07

Helfin, Bernard

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

Organic compounds

Carboxylic acid esters

560134, 560163, C07C 6708

Patent

active

041638611

ABSTRACT:
An aromatic urethane (e.g., methyl naphthyl urethane) is prepared by reacting an aromatic hydroxy compound, such as alpha-naphthol, with an aliphatic urethane, such as dimethyl urethane, in the presence of a catalyst consisting of a Lewis acid.

REFERENCES:
patent: 2822348 (1958-02-01), Haslam
patent: 2834799 (1958-03-01), Sowa
patent: 3404208 (1968-10-01), Robertson et al.
patent: 3872161 (1975-03-01), Fukuchi et al.
Ohno Koji, Japan 74 16,275, Apr. 1974. (See Chemical Abstracts, vol. 82, (1975), No. 17,510g.
Kraft, William M., "The Preparation of Indanone by a Carbamate-Aldehyde Reaction," Journal of the American Chemical Society, 70, (1948), p. 3570.
Kirk-Othmer "Encyclopedia of Chemical Technology" vol. 14, p. 473, Interscience Publ. 1st Ed. (1955).

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