Oxygen-containing aliphatic compounds and their us

专利名称：Oxygen-containing aliphatic compounds and

their use as intermediates for thepreparation of 4-hydroxy-2, 5-dimethyl-3(2H)- furanone

发明人：Hubert Mimoun,Alexander Zaslona,Jean-Paul Leresche

申请号：US08/416809申请日：19950413公开号：US05580996A公开日：19961203

摘要：The compounds of the invention are characterised by the formulae ##STR1##wherein index p represents an integer equal to 2 or 3 and q can take the value zero or 1,with the provision that p+q=3. Said compounds are obtained from hex-3-yne-2,5-diolfollowing a process which comprises reacting an ethylenic compound of formula

(CH. sub.3).sub. 2 C═C(H).sub.n (CH.sub.3).sub.m (I)

wherein index n represents an integer equal to 1 or 2 and m can take the values zeroor 1 and wherein n+m=2, with hex-3-yne-2,5-diol, followed by the oxidation of theacetylenic ether obtained by means of ruthenium tetroxide. The compounds of formula(III) can be used as intermediate products for the preparation of 4-hydroxy-2,5-dimethyl-3(2H)-furanone (Furaneol®).

申请人：FIRMENICH SA

代理机构：Pennie & Edmonds

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