Process for preparing diesters of malonic acid

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters

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556 30, 556 13, 556 23, 556 21, 502162, 502164, 502200, 502213, C07C 6736

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045394237

ABSTRACT:
Disclosed is an improved process for preparing diesters of malonic acid by subjecting ketene, carbon monoxide and an ester of nitrous acid to a liquid phase reaction in an organic solvent, in which the reaction is carried out in the presence of a catalyst of a platinum group metal complex represented by the formula:

REFERENCES:
patent: 4065490 (1977-12-01), Zehner
patent: 4076949 (1978-02-01), Zehner
patent: 4230881 (1980-10-01), Romano et al.
patent: 4256908 (1981-03-01), Nishimura et al.
patent: 4281174 (1981-07-01), Current

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