申请人:Givaudan-Roure Corporation
公开号:US05470991A1
公开(公告)日:1995-11-28
The invention is concerned with a process for the manufacture of substituted furans which are, in particular, flavorants; thereby 4-hydroxy-2-yn-1-ones or acetals or ketals thereof are cyclized with nucleophilic S-compounds to 3-S-furans, whereby this 3-S atom can be optionally substituted, and the acetylene derivatives, the 4-hydroxy-2-yn-1-ones, can be optionally 1- and/or 4-alkyl or alkenyl substituted.
这项发明涉及一种用于制造取代呋喃的过程,这些取代呋喃特别用作香精;因此,4-羟基-2-炔-1-酮或其缩醛或缩酮与亲核S-化合物环化成3-S-呋喃,其中这个3-S原子可以选择性地被取代,而乙炔衍生物,4-羟基-2-炔-1-酮,可以选择性地被1-和/或4-烷基或烯基取代。