Process for producing 2-formyl-1,4-butanediol

摘要

A process for producing 2-formyl-1,4-butanediol comprises effecting reaction of 2-butene-1,4-diol with hydrogen and carbon monoxide in the presence of:(a) a rhodium compound,(b) a tris(substituted aryl) phosphite having an electronic parameter, ν-value, of 2,080 to 2,090 cm⁻¹ and a steric parameter, ϑ-value, of 135 to 190° and being represented by the formula P(OR)₃wherein each of R's, which may be the same or different, represents a substituted aryl group having at least 7 carbon atoms, and(c) a bis(diphenylphosphino)alkane represented by the formula Ph₂P-(CH₂)n-PPh₂ wherein n is an integer of 2 to 6, andat a temperature of not more than 80°C.