Verfahren zur Herstellung von Alpha, Beta-ungesättigten Nitrilen aus Aldehyden und Formamid
申请人:BASF Aktiengesellschaft
公开号:EP0020950B1
公开(公告)日:1982-05-12
US4315869A
申请人:——
公开号:US4315869A
公开(公告)日:1982-02-16
Preparation of .alpha.,.beta.-unsaturated nitriles
申请人:BASF Aktiengesellschaft
公开号:US04315869A1
公开(公告)日:1982-02-16
.alpha.,.beta.-Unsaturated nitriles are prepared by reacting an aldehyde with formamide in the presence of an acid and the presence or absence of a non-aromatic solvent to give an N-alkenyl-formamide, which is then passed, in the gas phase, over a dehydration catalyst at an elevated temperature. The nitriles obtainable by the process of the invention are valuable starting materials for the preparation of dyes, crop protection agents, plasticizers and drugs.