申请人:BASF Aktiengesellschaft
公开号:US04031141A1
公开(公告)日:1977-06-21
New 12-alkoxy-3,7,11-trimethyl-dodecatetraenes are of interest as perfume and flavor materials having a mandarin and orange effect. The new compounds can be manufactured relatively simply, e.g. by vinylating or ethynylating the corresponding new, but easily accessible, 7-alkoxy-6-methyl-hept-5-en-2-ones and subsequently partially hydrogenating the products, reacting the resulting allyl alcohols with acetoacetic acid esters or diketenes at an elevated temperature, again vinylating or ethynylating the alkoxyketones obtained, then partially hydrogenating the products, and eliminating water from the 12-alkoxy-3,7,11-trimethyl-3-hydroxy-dodecatrienes thus obtained.
新的12-烷氧基-3,7,11-三甲基-十二碳四烯具有柑橘和橙子的香气和味道,因此具有很高的香水和食品香料的价值。这些新化合物可以相对简单地制造,例如通过乙烯基化或乙炔基化相应的新型、易得的7-烷氧基-6-甲基-庚-5-烯-2-酮,随后部分加氢产物,将得到的烯丙醇与乙酰乙酸酯或二酮在高温下反应,再次乙烯基化或乙炔基化所得的烷氧基酮,然后部分加氢产物,从而消除12-烷氧基-3,7,11-三甲基-3-羟基-十二碳三烯中的水。