Process for the preparation of cycloaliphatic aldehydes
    3.
    发明授权
    Process for the preparation of cycloaliphatic aldehydes 失效
    制备脂环族醛的方法

    公开(公告)号:US4922027A

    公开(公告)日:1990-05-01

    申请号:US293731

    申请日:1989-01-04

    摘要: The cycloaliphatic aldehydes of formula ##STR1## wherein R.sup.0, R.sup.1 and R.sup.2 represent independently a hydrogen atom or a lower alkyl from C.sub.1 to C.sub.6 and X stands for a group of formula ##STR2## wherein R.sup.3 and R.sup.4 represent independenly a lower alkyl radical from C.sub.1 to C.sub.3 and R.sup.5 represents a lower alkyl radical or hydrogen, provided that R.sup.1, R.sup.3 and R.sup.4 do not represent simulataneously a methyl radical whenever R.sup.0 and R.sup.2 represent each a hydrogen atom, are prepared from enol esters of formula ##STR3## wherein the wavy line stands for a --C--O-- bond of cis or trans configuration, Y represents an acyl group or P(O)(OR).sub.2, wherein R stands for a lower alkyl monovalent radical or an aryl, and Z defines a group of formula ##STR4## wherein R.sup.3, R.sup.4 and R.sup.5 are defined as above, by cyclisation carried out by means of an acidic cyclisation agent.

    摘要翻译: 式(I)的脂环族醛其中R 0,R 1和R 2分别独立地表示氢原子或C1至C6的低级烷基,X表示下式的基团:其中R 3和R 4独立地表示低级烷基 从C1至C3的基团和R5代表低级烷基或氢,条件是每当R 0和R 2表示各自为氢原子时,R 1,R 3和R 4不同时表示甲基,则由式IMA的烯醇酯 II)其中波浪线表示顺式或反式构型的-CO-键,Y表示酰基或P(O)(OR)2,其中R表示低级烷基一价基团或芳基,Z定义 通过用酸性环化剂进行的环化,通式为“IMAGE”的一组其中R 3,R 4和R 5定义如上。

    Process for preparing TCD-dialdehyde
    9.
    发明申请
    Process for preparing TCD-dialdehyde 失效
    制备TCD-二醛的方法

    公开(公告)号:US20050101805A1

    公开(公告)日:2005-05-12

    申请号:US10967731

    申请日:2004-10-18

    CPC分类号: C07C47/347 C07C2603/68

    摘要: A process for preparing 3(4),8(9)-bisformyltricyclo[5.2.1.02.6]decane by hydroformylating dicyclopentadiene with subsequent distillation wherein the hydroformylation of dicyclopentadiene is carried out in two stages, and, in the first hydroformylation stage, the reaction is effected in a heterogeneous reaction system using an aqueous solution of transition metal compounds, containing water-soluble organic phosphorus (lll) compounds in complex-bound form, of group Vlll of the Period Table of the Elements to give 8(9)-bisformyltricyclo[5.2.1.02.6]dec-3-ene, and, in a second hydroformylation stage, the thus obtained 8(9)-bisformyltricyclo[5.2.1.02.6]dec-3-ene is converted, in homogeneous organic phase in the presence of transition metal compounds of group Vlll of the Periodic Table of the Elements to 3(4),8(9)-bisformyltricyclo[5.2.1.02.6]decane.

    摘要翻译: 通过加氢甲酰化二环戊二烯制备3(4),8(9) - 双甲基三环[5.2.1.0]癸烷的方法,随后蒸馏,其中二环戊二烯的加氢甲酰化分两个阶段进行, 第一加氢甲酰化阶段,反应在非均相反应体系中使用过渡金属化合物的水溶液进行,所述过渡金属化合物含有复合结合形式的水溶性有机磷(III)化合物,元素周期表第VI1组 得到8(9) - 二甲基三环[5.2.1.0,26.6]癸-3-烯,并在第二加氢甲酰化阶段中,由此得到的8(9) - 二甲基三环[5.2.1.0] 在(3),(9) - 双甲基三环[5.2]的元素周期表第VI1组的过渡金属化合物的存在下,在均相有机相中转化2,6-二烯-3-烯。 1.06D癸烷。

    Preparation of aldehydes
    10.
    发明授权
    Preparation of aldehydes 失效
    醛的制备

    公开(公告)号:US5679869A

    公开(公告)日:1997-10-21

    申请号:US567749

    申请日:1995-12-05

    CPC分类号: B01J23/06 C07C45/41

    摘要: A process for preparing aldehydes of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, C.sub.1 -C.sub.6 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl, aryl, C.sub.7 -C.sub.12 -alkylphenyl, C.sub.7 -C.sub.12 -phenylalkyl and R.sup.1 and R.sup.2 are joined together to form a 3-, 4-, 5-, 6- or 7-membered cycloaliphatic ring, R.sup.1 and R.sup.3 are each C.sub.1 -C.sub.4 -alkoxy, phenoxy, methylamino, dimethylamino or halogen, and R.sup.1 is additionally hydroxyl or amino comprises reacting a carboxylic acid or ester of the general formula II ##STR2## where R.sup.1, R.sup.2 and R.sup.3 are each as defined above, and R.sup.4 is hydrogen, C.sub.1 -C.sub.6 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl, aryl, C.sub.7 -C.sub.12 -alkylphenyl or C.sub.7 -C.sub.12 -phenylalkyl, with hydrogen in the gas phase at temperatures from 200.degree. to 450.degree. C. and pressures from 0.1 to 20 bar in the presence of a catalyst whose catalytically active mass comprises from 60 to 99.9% by weight of zirconium oxide and from 0.1 to 40% by weight of one or more elements of the lanthanides.

    摘要翻译: 制备通式I(I)的醛的方法,其中R1,R2和R3各自为氢,C1-C6烷基,C3-C8-环烷基,芳基,C7-C12-烷基苯基,C7-C12- 苯基烷基和R 1和R 2连接在一起形成3-,4-,5-,6-或7-元环脂族环,R 1和R 3各自为C 1 -C 4 - 烷氧基,苯氧基,甲基氨基,二甲基氨基或卤素,R 1 另外羟基或氨基包括使通式II(II)的羧酸或酯与其中R 1,R 2和R 3各自如上所定义,R 4是氢,C 1 -C 6烷基,C 3 -C 8 - 环烷基,芳基,C 7 -C 12 - 烷基苯基或C 7 -C 12 - 苯基烷基,在气相中的氢气在200-450℃的温度和0.1至20巴的压力下,在催化剂存在下,其催化活性质量包含 60至99.9重量%的氧化锆和0.1至40重量%的一种或多种镧系元素。