Preparation of selected epoxides

Details Preparation of selected epoxides Preparation of selected epoxides

1983-04-18

1984-12-25

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204128, C25B 302

Patent

active

044902220

ABSTRACT:
A process for the production of epoxides of the formula (I): ##STR1## in which the benzene ring A is substituted with 1 to 3 halogen atoms, which are the same or different, and optionally carries other substituents, and R.sup.1 is ##STR2## which is the same as or different from the other group ##STR3## or C.sub.1-6 alkyl, the process comprising electrolyzing the corresponding alkene of the formula (II): ##STR4## in a medium comprising a solvent for the alkene and an aqueous solution of a halogen salt, the solvent/water ratio by weight being greater than unity, the solvent being miscible with water at the solvent/water ratio used and being chemically inert to both the alkene and the free halogen produced from the halogen salt by the electrolysis.
The epoxides are useful in the synthesis of fungicidal compounds and certain of the epoxides are novel compounds.

REFERENCES:
patent: 3288692 (1966-11-01), Leduc et al.
patent: 3394059 (1968-07-01), Young
patent: 3497431 (1970-02-01), Kronig et al.
patent: 3650918 (1972-03-01), Johnson et al.
Simmrock, "Hydrocarbon Processing", vol. 57, pp. 105-113, (Nov. 1978).

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