Process for preparing 1,4-butanediol

Details Process for preparing 1,4-butanediol Process for preparing 1,4-butanediol

1994-05-03

1995-06-20

Mars, Howard T.

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

Organic compounds

Oxygen containing

568877, 568454, C07C 2704

Patent

active

054262500

ABSTRACT:
1,4-butanediol is prepared from allyl alcohol containing allyl acetate and water. The allyl alcohol is subjected to a hydroformylation reaction in the presence of an organic solvent, a rhodium complex, and a phosphorous compound under an atmosphere of carbon monoxide and hydrogen, to produce a hydroformylation product, which is extracted with an alkaline aqueous solution in the presence of carbon monoxide and/or hydrogen. After the extraction, an extracted raffinate solution containing the rhodium complex in the organic solvent is recycled through the same hydroformylation process, while the extracted aqueous solution containing the hydroformylation product is subjected to a hydrogenation reaction in the presence of hydrogen, with a hydrogenation catalyst added, to produce 1,4-butanediol.

REFERENCES:
patent: 4740626 (1988-04-01), Bahrmann et al.
Copelin, Preparation of diols from unsaturated alcohols, 904 OG 274, Nov. 21, 1972.

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