Process for preparing 3-hydroxyalkanals
    3.
    发明授权
    Process for preparing 3-hydroxyalkanals 失效
    3-羟基卡那啶的制备方法

    公开(公告)号:US5962745A

    公开(公告)日:1999-10-05

    申请号:US22011

    申请日:1998-02-11

    摘要: A process for preparing 3-hydroxyalkanals having 3 to 12 carbon atoms by hydration of 2-alkenals with homogeneous catalysis, by using as catalyst a compound corresponding to the formula ##STR1## wherein: z denotes H, C.sub.1 - to C.sub.6 -alkyl, --CH.sub.2 --CH(CH.sub.3) --Y' or --(CH.sub.2).sub.o --Y'R denotes H, C.sub.1 - to C.sub.6 -alkyl, benzyl, phenyl, .omega.-hydroxy --C.sub.1 - to C.sub.6 -alkyl, --CH.sub.2 --CH(CH.sub.3)--Y' or --(CH.sub.2).sub.o --Y'Y and Y' are identical or different and denote --COOH, --P(O) (OH).sub.2, --OH, pyridyl, or --P(O) (CH.sub.2 OH)OH, wherein the acid functional group may be present partly in the form of its alkali metal salt, alkaline-earth salt or ammonium saltn denotes 1, 2, 3, 4, 5 or 6 where Y is --COOH, --P(O) (OH).sub.2, pyridyl or --P(O) (CH.sub.2 OH) OH; 2 or 3 where Y is --OHo denotes 1, 2, 3, 4, 5 or 6 where Y' is --COOH, --P(O) (OH).sub.2, pyridyl or --P(O) (CH.sub.2 OH)OH; 0, 2 or 3 where Y' is --OH.

    摘要翻译: 通过使用相应于下式的化合物作为催化剂,通过使用具有均相催化作用的2-烯烃水合制备具有3至12个碳原子的3-羟基烷烃的方法其中:z表示H,C1-至C6烷基,-CH2-CH (CH 3)-Y'或 - (CH 2)o-Y'R表示H,C 1至C 6烷基,苄基,苯基,ω-羟基-C 1至C 6 - 烷基,-CH 2 -CH(CH 3) '或 - (CH 2)o Y'Y和Y'相同或不同,表示-COOH,-P(O)(OH)2,-OH,吡啶基或-P(O)(CH 2 OH)OH,其中酸 官能团可以部分以其碱金属盐,碱土盐或铵盐的形式存在,n表示1,2,3,4,5或6,其中Y是-COOH,-P(O)(OH)2 ,吡啶基或-P(O)(CH 2 OH)OH; 2或3,其中Y是-OH o表示1,2,3,4,5或6,其中Y'是-COOH,-P(O)(OH)2,吡啶基或-P(O)(CH 2 OH)OH; 0,2或3,其中Y'是-OH。

    Process for the preparation of 1,3-propanediol by the hydrogenation of
hydroxypropionaldehyde
    6.
    发明授权
    Process for the preparation of 1,3-propanediol by the hydrogenation of hydroxypropionaldehyde 失效
    通过羟基丙醛氢化制备1,3-丙二醇的方法

    公开(公告)号:US5364984A

    公开(公告)日:1994-11-15

    申请号:US948718

    申请日:1992-09-24

    CPC分类号: C07C29/141

    摘要: Disclosed is a process for the preparation of 1,3-propanediol by the hydrogenation of hydroxypropionaldehyde (HPA) in aqueous solution on a formed carrier catalyst in a solid bed, the concentration of HPA in the solution being from 5 to 100% by weight and hydrogenation being carried out at temperatures of from 30.degree. to 180.degree. C. and hydrogen pressures of from 5 to 300 bar and at a pH of from 2.5 to 6.5. The carrier catalyst is formed principally of titanium oxide on which platinum is applied in a finely divided form in a quantity of from 0.1 to 5.0% by weight, based on the carrier.

    摘要翻译: 公开了通过在固体床中形成的载体催化剂上的羟基丙醛(HPA)在水溶液中氢化制备1,3-丙二醇的方法,溶液中HPA的浓度为5至100重量%,以及 氢化在30至180℃的温度和5至300巴的氢气压力和2.5至6.5的pH下进行。 载体催化剂主要由氧化钛形成,其上以基于载体的0.1至5.0重量%的量以细碎形式施加铂。