Novel preparation of compounds of the 4-oxodamascone series, and novel
scents from this class of compounds
    7.
    发明授权
    Novel preparation of compounds of the 4-oxodamascone series, and novel scents from this class of compounds 失效
    4-氧代雄酮系列化合物的新型制备,以及这类化合物的新颖香味

    公开(公告)号:US4914229A

    公开(公告)日:1990-04-03

    申请号:US761695

    申请日:1985-09-09

    摘要: Process for the preparation of the compounds of the formulae Ia and Ib ##STR1## wherein A. 2,4,4-trimethylcyclohex-2-en-1-one oxime of the formula IIb ##STR2## is treated with a strong aqueous acid at from 30.degree. to 80.degree. C., preferably from 40.degree. to 70.degree. C.,B. the resulting ketone of the formula IIIb ##STR3## is oxidized in a conventional manner, and C. if desired, the resulting compound Ib is isomerized in a conventional manner.Compounds of the formula A ##STR4## where R is one of the following radicals: --CH(OH)--CH.sub.2 --CH.dbd.CH.sub.2 (IIIb), --CH(OH)--CH.sub.3 (IIIc), --CH.sub.2 OH (IIId), --CH(OH)--CH.dbd.CH.sub.2 (IIIe), --CH(OCOCH.sub.3)--CH.sub.3 (IIIf), --CH.sub.2 --OCOCH.sub.3 (IIIg), --CO--CH.sub.2 --CH.dbd.CH.sub.2 (Ib), --CO--CH.sub.3 (Ic), and --CO--CH.dbd.CH.sub.2 (Ie).The compounds IIIb to IIIg, Ib, Ic and Ie are useful scents and aromas, and furthermore may become important intermediates for novel carotenoids. They can be prepared in a relatively simple manner from compounds which are very readily available.

    摘要翻译: 用于制备式Ia和Ib化合物的方法其中式IIb(IIb)的2,4-二甲基环己-2-烯-1-酮肟 在30℃至80℃,优选40℃至70℃的条件下用强酸性水溶液处理B.得到式IIIb(IIIb)的所得酮以常规方式被氧化, 如果需要,所得化合物1b以常规方式异构化。 -CH(OH)-CH 2 -CH = CH 2(IIIb),-CH(OH)-CH 3(IIIc),-CH 2 OH(IIId)的化合物其中R是下列基团之一: ),-CH(OH)-CH = CH 2(IIIe),-CH(OCOCH 3)-CH 3(IIIf),-CH 2 -OCOCH 3(IIIg),-CO-CH 2 -CH = CH 2 (Ic)和-CO-CH = CH 2(Ie)。 化合物IIIb至IIIg,Ib,Ic和Ie是有用的香味和香味,此外可成为新类胡萝卜素的重要中间体。 它们可以以相对简单的方式从非常容易获得的化合物制备。