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    • 1. 发明申请
    • CLEAVAGE OF ALKYNEDIOLS
    • 烯丙醇清除
    • WO2007039245A1
    • 2007-04-12
    • PCT/EP2006/009476
    • 2006-09-29
    • DSM IP ASSETS B.V.BONRATH, WernerJEISY, JuliusMASCARELLO, Francesco
    • BONRATH, WernerJEISY, JuliusMASCARELLO, Francesco
    • C07C45/52C07C29/42C07C29/88C07C49/203C07C49/04C07C33/042C07C33/048
    • C07C29/42C07C45/512C07C49/08C07C49/203C07C49/04C07C33/044C07C33/048
    • The present invention relates to a process for the manufacture of a mixture of ketones of the formula I and II, wherein R 1 , R 2 , R 3 and R 4 are independently from each other C 1-30 -alkyl, by reacting an alkynediol of the formula III in the presence of a catalyst at a temperature of at least 500C and/or at a pressure of at most atmospheric pressure. In preferred embodiments of the invention the ketones of the formulae I and II are identical. Preferably the catalyst is a basic catalyst, most preferably selected from the group consisting of aqueous NaOH and aqueous KOH solutions, and KF on alu minium oxide. The alkynediol is most preferably selected from the group consisting of 2,6,9,13- tetramethyl-tetradeca-2, 12-dien-7-yne-6,9-diol, 2,6, 10, 13 , 17,21 -hexamethyl-docos- 11-yne-10,13-diol, 2,6,10,14,17,21,25,29-octamethyl-triacont-15-yne-14,17-diol, 3,7,10,14-tetramethyl-hexadeca-3,13-dien-8-yne-7,10-diol, 3,6-dimethyl-oct-4-yne-3,6-diol and 2,5-dimethyl-hex-3-yne-2,5-diol. Advantegeously the process of the present invention may be used in the processes for the manufacture of dehydrolinalool or dehydroisophytol to recycle at least one of the starting materials.
    • 本发明涉及制备式I和II的酮的混合物的方法,其中R 1,R 2,R 3, 通过使式III的炔二醇在催化剂的存在下在温度为0℃的温度下反应,通过使式III的炔二醇彼此独立地彼此独立地为低级和低级烷基 至少500℃和/或在至多大气压的压力下。 在本发明的优选实施方案中,式I和II的酮是相同的。 优选地,催化剂是碱性催化剂,最优选选自NaOH水溶液和KOH水溶液,和在氧化铝上的KF。 炔二醇最优选选自2,6,9,13-四甲基 - 十四碳-2,12-二烯-7-基-6,9-二醇,2,6,10,13,17,21 - 六甲基 - 二十二烷-11-炔-10,13-二醇,2,6,10,14,17,21,25,29-八甲基 - 三十-15 -ne-14,17-二醇,3,7,10 ,14-四甲基 - 十六碳-3,13-二烯-8-炔-7,10-二醇,3,6-二甲基 - 辛-4-炔-3,6-二醇和2,5-二甲基 - 六 -yne -2,5-二醇。 在本发明的方法中,可以将本发明的方法用于制造脱氢二醇或脱氢表面活性剂以再循环至少一种原料的方法。