Process for the production of substituted vinylbenzenes

Details Process for the production of substituted vinylbenzenes Process for the production of substituted vinylbenzenes

1993-04-08

1994-09-06

Prescott, Arthur C.

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

Organic compounds

Carboxylic acid esters

560138, C07C 6900

Patent

active

053449630

ABSTRACT:
A process for the production of substituted vinylbenzenes of the general formula: ##STR1## wherein R is a lower alkyl group having 1 to 4 C atoms, R.sub.1 is hydrogen or an acetyl group and R.sub.2 is hydrogen, a lower alkyl group having 1 to 4 C atoms or a benzyl group. A trialkylhydroquinone is cyclized with an aldehyde to an acetal and the latter is pyrolized to the end product. The substituted vinylbenzenes are valuable intermediate products in the synthesis of antioxidants.

REFERENCES:
patent: 3966801 (1976-06-01), Diamond
patent: 4676604 (1987-06-01), Petrzilka
patent: 4956123 (1990-09-01), Sawada et al.
patent: 5080886 (1992-01-01), Mickle et al.
patent: 5142095 (1992-08-01), Connor et al.
Manecke et al, Chem. Abs., vol. 54, 5538, (1960).
Chem. Berichte, vol. 92, (1959), pp. 2958 to 2961.

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