method of producing a alkalisalzes 2 - hydroxymethylen - 3.3 - dialkoxypropannitril and procedures for extraction of the substance from the synthetic reaktionsgemisch containing alcoholic disease.

摘要

There are disclosed a process for producing a 2-hydroxymethylene-3,3-dialkoxypropanenitrile alkali metal salt (ALVM2) represented by the formula (I): CHEM wherein R represents a lower alkyl group having 1 to 4 carbon atoms and M represents an alkali metal, which comprises allowing a 3,3-dialkoxypropanenitrile represented by the formula (II): (RO)2CHCH2CN (II) wherein R is the same as defined above, to react with carbon monoxide in a lower alcoholic solution of an alkali metal lower alkoxide; and a process for obtaining ALVM2, which comprises adding a lower alcohol having 1 to 4 carbon atoms to a synthetic reaction mixture containing ALVM2 represented by the above formula (I) and methyl formate and heating the mixture to 30 to 70 DEG C, thereby taking methyl formate out of the system.