Manufacture of butenediol diesters

Details Manufacture of butenediol diesters Manufacture of butenediol diesters

1977-03-18

1980-12-16

Garner, Vivian

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

Organic compounds

Carboxylic acid esters

26034611, 560234, 568858, 568861, C07C 67055, C07C 6908, C07C 6916

Patent

active

042399106

ABSTRACT:
In a process for the manufacture of butenediol-dicarboxylic acid esters by reacting butadiene with oxygen and a carboxylic acid in the presence of a noble metal catalyst containing platinum or palladium, the carboxylic acid is added to the reaction mixture in the form of the ester of the acid with a low molecular weight aliphatic alcohol such as methanol and the reaction is carried out under conditions under which the ester undergoes hydrolysis, or the hydrolysis is carried out before the main reaction. This enables the carboxylic acid obtained on further processing of the butenediol esters to be recycled.

REFERENCES:
patent: 3755423 (1973-08-01), Onoda et al.
patent: 3872163 (1975-03-01), Shimizu et al.
patent: 3965152 (1976-06-01), Smith et al.
patent: 3965156 (1976-06-01), Smith et al.

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