Process for producing mono-P-nitrobenzyl malonate

Details Process for producing mono-P-nitrobenzyl malonate Process for producing mono-P-nitrobenzyl malonate

1995-06-27

1996-05-14

Dees, Jose G.

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

Organic compounds

Carboxylic acid esters

560 20, C07C 6938

Patent

active

055169341

ABSTRACT:
The present invention aims at providing a process for economically producing mono-p-nitrobenzyl malonate while recovering the excessive malonic acid and treating the by-product. The process of the present invention for producing mono-p-nitrobenzyl malonate comprises reacting p-nitrobenzyl-alcohol with malonic acid in an organic solvent, which may contain di-p-nitrobenzyl malonate if necessary, cooling the reaction mixture thus obtained to 35.degree. to 100.degree. C., separating the malonic acid thus precipitated and treating the reaction mixture with a basic aqueous solution at 35.degree. to 80.degree. C. The di-p-nitrobenzyl malonate formed as the by-product is effectively utilized by hydrolyzing or reacting with malonic acid to thereby give mono-p-nitrobenzyl malonate.

REFERENCES:
patent: 5087734 (1992-02-01), Ishikura et al.

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