PROCESS FOR THE PREPARATION OF DIESTERS

摘要

The present invention relates to a process for the preparation of diesters from imide or dinitrile compounds. More particularly, said invention relates to a process for the preparation of diester compounds from dinitrile compounds by utilizing vapor phase hydrolysis of dinitrile compounds in the presence of alcohol for obtaining diester compounds. Still more particularly, said invention relates to a process for the preparation of diesters from branched dinitrile compounds such as methylglutaronitrile or the branched dinitrile compounds obtained as secondary products during the preparation of adiponitrile by hydrocyanation of butadiene.