Process for preparing the mono-methallyl ether of pyrocatechin

Details Process for preparing the mono-methallyl ether of pyrocatechin Process for preparing the mono-methallyl ether of pyrocatechin

1981-05-14

1983-06-28

Helfin, Bernard

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

Organic compounds

Oxygen containing

568651, C07C 4116

Patent

active

043907334

ABSTRACT:
The mono-methallyl ether of pyrocatechin of formula (I): ##STR1## is prepared by reacting pyrocatechin of formula (II): ##STR2## with a methallyl halide of formula (III): ##STR3## in a homogeneous dissolving medium, e.g., alcohols, aliphatic polyalcohols and monoethers thereof, or water, in the presence of an organic or inorganic base.
The mono-methallyl ether of pyrocatechin is used as an intermediate for organic syntheses and, in particular for synthesizing the product of formula (IV); ##STR4## which is marketed under the tradename "Carbofuran" and is a compound which is the active principle in soil insecticides of different overall compositions which are available on the market.

REFERENCES:
patent: 4250333 (1981-02-01), Rakoutz
Laskina et al., Chem. Abs., vol. 61 (1964) 11919(b)-(d).
The Condensed Chemical Dictionary, 8th Ed. (1971), 294-295.

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