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发明授权
US4914229A 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

Novel preparation of compounds of the 4-oxodamascone series, and novel scents from this class of compounds
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（中）：

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。

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