会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Process for the preparation of 1,4-butanediol monoethers
    • 1,4-丁二醇单醚的制备方法
    • US06103939A
    • 2000-08-15
    • US426957
    • 1999-10-26
    • Rolf FischerRolf PinkosMartin SchaferArthur HohnPeter Schwab
    • Rolf FischerRolf PinkosMartin SchaferArthur HohnPeter Schwab
    • C07C41/26C07C43/13C07C43/00C07C41/00
    • C07C41/26
    • A process for preparing tetrahydrofuran, which comprises reacting 1,4-butenediol diethers of the formulae I and/or IIRO--CH.sub.2 --CH.dbd.CH--CH.sub.2 --OR IRO--CH.sub.2 --CH.sub.2 .dbd.CH--CH.sub.2 --OR II,where the R radicals can be identical or different and are C.sub.1 -C.sub.15 -alkyl or cycloalkyl radicals, C.sub.6 -C.sub.12 -aryl radicals or C.sub.7 -C.sub.15 -aralkyl radicals, with water and hydrogen at from 20 to 300.degree. C. under from 1 to 300 bar in the presence of catalysts or catalyst combinations which comprise components which are both capable of hydrogenation and have acidic or basic centers and a novel process for preparing 1,4-butanediol diethers of the formula I by metathesis are described.The invention furthermore relates to the separate preparation of 1,4-butanediol monoethers of the formula IIIHO--CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --OR III,where R has the meanings indicated for formulae I and II, for which purpose 1,4-butanediol diethers of the formulae I and/or II are reacted as claimed in claim 1 with water and hydrogen in the presence of a hydrogenation catalyst at from 20 to 300.degree. C. under from 1 to 300 bar.
    • 一种制备四氢呋喃的方法,其包括使式I和/或IIRO-CH2-CH = CH-CH2-ORIRO-CH2-CH2 = CH-CH2-ORII的1,4-丁烯二醇二醚反应,其中R基团可以是 相同或不同的是C 1 -C 15 - 烷基或环烷基,C 6 -C 12 - 芳基或C 7 -C 15 - 芳烷基,其中水和氢在20-300℃下,在1至300巴下, 描述了包含能够氢化并具有酸性或碱性中心的组分的催化剂或催化剂组合,以及通过复分解制备式I的1,4-丁二醇二醚的新方法。 本发明还涉及分别制备式IIIHO-CH2-CH2-CH2-CH2-ORIII的1,4-丁二醇单醚,其中R具有式I和II所示的含义,为此目的1,4-丁二醇 式I和/或II的二醚在氢化催化剂存在下,在20-300℃,1〜300巴下,与水和氢反应,如权利要求1所述。