| 摘要 |
PROBLEM TO BE SOLVED: To industrially and advantageously obtain alkadienols without losing a phosphine compound by subjecting a changed material of phosphine produced with reaction to decomposition treatment to regenerate phosphines and recycling the phosphines to a reaction system. SOLUTION: When a conjugated alkadiene is reacted with water in the presence of a catalyst comprising (A) a palladium compound and (B) a phosphine compound and carbon dioxide, (C) at least a part of a changed material of phosphine compound in a reaction product liquid obtained by reaction is subjected to decomposition treatment in the presence of the component A to regenerate the component B and the regenerated component B is recycled to the reaction system. Furthermore, the component C is subjected to decomposition treatment by heating, hydrogenation or decomposition treatment by using a basic compound, and the component C is preferably a phosphonium salt of formula I or formula II [X is an alkyl; Y is H, an alkyl, an alkoxyl, etc.; (n) is 0-3; R1 to R3 are each a (substituted)1-14C hydrocarbon; (z) is OH, hydroxycarboxy, etc.]. |
