Chemistry: electrical and wave energy – Processes and products
Patent
1990-04-18
1991-05-07
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
204 72, C25B 300
Patent
active
050134124
ABSTRACT:
The invention relates to a process for the electrosynthesis of a beta,gamma-unsaturated ester by electrolysis, in a cell having only a single compartment, of a mixture of an alpha,beta-unsaturated halide and an alpha-halogenated ester in the presence of an amount which is less than the stoichiometric amount for the reaction between the halide and the ester of a catalyst based on nickel complexed with a binitrogenous bidentate organic ligand.
The anode, which is consumed by the electrochemical reaction of which it is the center, is made of a metal chosen from the group comprising the reducing metals and their alloys and is preferably made of zinc, aluminum or magnesium.
This process, which is simple and economical, in particular permits the synthesis of arylacetates and arylpropionates, which are intermediates in the synthesis of pharmaceutical or plant protection products.
REFERENCES:
patent: 3764492 (1973-10-01), Baizer et al.
patent: 4097344 (1978-06-01), Drury
patent: 4400566 (1983-08-01), Colon
patent: 4629541 (1986-12-01), Moingeon et al.
patent: 4686018 (1987-08-01), Chaussard
Conan Annie
D'Incan Esther
Perichon Jacques
Sibille Soline
Marquis Steven P.
Niebling John F.
Societe Nationale des Poudres et Explosies (SNPE)
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