Process for producing β-hydroxyester

Details Process for producing β-hydroxyester Process for producing β-hydroxyester

2007-08-14

2007-08-14

Wilson, James O. (Department: 1621)

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

Organic compounds

Carboxylic acid esters

Reexamination Certificate

active

10554104

ABSTRACT:
A process for producing a β-hydroxyester by reacting an epoxide, an alcohol and carbon monoxide in the presence of a cobalt carbonyl compound as catalyst,which is characterized in using as co-catalyst, a pyridine derivative having an amino substituent of formula (1),wherein R1and R2are independently hydrogen, formyl, acyl, alkoxycarbonyl, substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, substituted or unsubstituted aryl, or R1and R2may be taken together with the adjacent nitrogen atom to form a ring, and n is an integer of 1 or 2.

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K. Hinterding et al., “Regioselective Carbomethoxylation of Chiral Epoxides: A New Route to Enantiomerically Pure β-Hydroxy Esters”, Journal of Organic Chemistry, vol. 64, No. 7, pp. 2164-2165, 1999.
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Dalcanale, Enrico et al., “A New Synthesis of 2-(6-Methoxycarbonylhexyl)-cyclopent-2-en-1-one”, Synthesis, pp. 492-494, (1986).

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