Process for preparing 1-nitrobenzene-2-alkyloxycarbonyl-5-carbox

Details Process for preparing 1-nitrobenzene-2-alkyloxycarbonyl-5-carbox Process for preparing 1-nitrobenzene-2-alkyloxycarbonyl-5-carbox

1982-11-29

1985-03-26

Helfin, Bernard

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

Organic compounds

Carboxylic acid esters

C07C 7946, C07C 7602

Patent

active

045074917

ABSTRACT:
To prepare a 1-nitrobenzene-2-alkyloxycarbonyl-5-carboxylic acid, a dialkyl benzene-1,4-dicarboxylate is first nitrated in a customary manner and the dialkyl 1-nitrobenzene-2,5-dicarboxylate compound obtained is subjected to a partial acidic ester hydrolysis without isolating the nitro compound prepared as an intermediate. The acidic ester hydrolysis is carried out in the presence of a catalytic amount of an organic solvent which is completely or partially miscible with water and has a boiling point of above 90.degree. C. and/or of an emulsifier; it is preferably carried out at a temperature between 65.degree. and 110.degree. C.

REFERENCES:
Monick, Alcohols, Their Chemistry, Properties and Manufacture, (1968), 139.

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