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    • 3. 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。
    • 6. 发明授权
    • Bis(diorganophosphino)methanes
    • 双(二有机膦基)甲烷
    • US5756847A
    • 1998-05-26
    • US874533
    • 1997-06-13
    • Arthur HohnJustin Wolf
    • Arthur HohnJustin Wolf
    • C07F9/46C07F9/48C07F9/50C07F9/70C07F9/72C07F9/90C07F9/92
    • C07F9/5009C07F9/48C07F9/5027C07F9/5068
    • Preparation of methylene-bridged compounds of the formula I ##STR1## where R.sup.1 to R.sup.4 are identical or different and are each saturated C.sub.1 -C.sub.30 -hydrocarbyl, unsubstituted phenyl, phenyl substituted by substituents inert under the reaction conditions, or hydrogen, E.sup.1 and E.sup.2 are identical or different and are each phosphorus, arsenic or antimony, and X is a chemical bond or oxygen by reacting a tin compound of the general formula II R.sub.3.sup.5 Sn--CH.sub.2 M II, where R.sup.5 is C.sub.1 -C.sub.20 -hydrocarbyl and M is an alkali metal, with a compound of the general formula III ##STR2## where Y is halogen, metallating the thus-obtained tin compound of the general formula IV ##STR3## with an alkali organometallic, and reacting the product with a compound of the general formula V ##STR4## to give a methylene-bridged compound of the formula I. And novel 45 bis(diorganophosphino)methanes.
    • 制备式I的亚甲基桥接化合物其中R 1至R 4相同或不同,并且各自为饱和的C 1 -C 30 - 烃基,未被取代的苯基,被在反应条件下为惰性的取代基取代的苯基,或氢,E1和 E2是相同或不同的,各自是磷,砷或锑,X是化学键或氧,通过使通式IIR35Sn-CH2MII的锡化合物(其中R5是C1-C20烃基,M是碱金属)反应, 与通式III的化合物III,其中Y是卤素,用碱金属有机金属化由此得到的通式IV IV的锡化合物,并使产物与通式V的化合物 得到式I的亚甲基桥接化合物。和新颖的45双(二有机膦基)甲烷。
    • 8. 发明授权
    • Preparation of methylene-bridged hetero compounds and novel bis
(diorganophosphino) methanes
    • 亚甲基桥接的杂化合物和新的双(二有机膦基)甲烷的制备
    • US5698743A
    • 1997-12-16
    • US756478
    • 1996-11-26
    • Arthur HohnJustin Wolf
    • Arthur HohnJustin Wolf
    • C07F9/46C07F9/48C07F9/50C07F9/70C07F9/72C07F9/90C07F9/92
    • C07F9/5009C07F9/48C07F9/5027C07F9/5068
    • Preparation of methylene-bridged compounds of the formula I ##STR1## where R.sup.1 to R.sup.4 are identical or different and are each saturated C.sub.1 -C.sub.30 -hydrocarbyl, unsubstituted phenyl, phenyl substituted by substituents inert under the reaction conditions, or hydrogen, E.sup.1 and E.sup.2 are identical or different and are each phosphorus, arsenic or antimony, and X is a chemical bond or oxygen by reacting a tin compound of the general formula II R.sub.3.sup.5 Sn--CH.sub.2 M, II where R.sup.5 is C.sub.1 --C.sub.20 -hydrocarbyl and M is an alkali metal, with a compound of the general formula III ##STR2## where Y is halogen, metallating the thus-obtained tin compound of the general formula IV ##STR3## with an alkali organometallic, and reacting the product with a compound of the general formula V ##STR4## to give a methylene-bridged compound of the formula I. And novel bis(diorganophosphino)methanes.
    • 制备式I的亚甲基桥接化合物其中R 1至R 4相同或不同,并且各自为饱和的C 1 -C 30 - 烃基,未被取代的苯基,被在反应条件下为惰性的取代基取代的苯基,或氢,E1和 E2是相同或不同的,分别是磷,砷或锑,X是化学键或氧,通过使通式II R 35 Sn-CH 2 M的II化合物,其中R 5是C 1 -C 20烃基,M是碱 金属与通式III的化合物III,其中Y是卤素,用碱金属有机金属化由此得到的通式IV IV的锡化合物,并将产物与一般化合物 式V化合物,得到式I的亚甲基桥接化合物。和新型双(二有机膦基)甲烷。