利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

6 条记录 (耗时 0.02 秒)

    Prepartion of 4-isopropylcyclohexylmethanol and its alkyl ethers
    2.
    发明授权
    Prepartion of 4-isopropylcyclohexylmethanol and its alkyl ethers 失效
    制备4-异丙基环己基甲醇及其烷基醚

    公开(公告)号：US4847425A

    公开(公告)日：1989-07-11

    申请号：US200460

    申请日：1988-05-31

    申请人： Dieter Degner ,  Walter Gramlich ,  Wolfgang Lengsfeld ,  Ludwig Schuster

    发明人： Dieter Degner ,  Walter Gramlich ,  Wolfgang Lengsfeld ,  Ludwig Schuster

    IPC分类号： C07C29/19 ,  C07C31/135 ,  C07C41/01 ,  C07C41/28 ,  C07C45/51

    CPC分类号： C07C41/28 ,  C07C29/19 ,  C07C31/1355 ,  C07C41/01 ,  C07C45/515 ,  C07C2101/14

    摘要： 4-isopropylcyclohexylmethanol and its alkyl ethers of the general formula I ##STR1## where R.sup.1 is H or C.sub.1 -C.sub.4 -alkyl, are prepared by a process in which the novel 4-(1-alkoxy-1-methylethyl)-benzaldehyde or its dialkyl acetal of the general formula II ##STR2## where X is oxygen (IIa) or its two R.sup.2 O groups (IIb) and R.sup.2 and R.sup.3 are each C.sub.1 -C.sub.4 -alkyl, is heated to 100.degree.-250.degree. C., preferably 130.degree.-200.degree. C., under a hydrogen pressure of from 50 to 350, preferably from 150 to 300, bar in the presence of a noble metal of group VIII of the Periodic Table.

    摘要翻译： 4-异丙基环己基甲醇及其通式Ⅰ的烷基醚，其中R 1为H或C 1 -C 4 - 烷基，是通过其中新的4-（1-烷氧基-1-甲基乙基） - 其中X是氧（IIa）或其两个R 2 O基团（IIb）和R 2和R 3各自是C 1 -C 4烷基的通式II（II）的苯甲醛或其二烷基缩醛被加热到100-250℃ 在50℃至350℃，优选150至300巴的氢气压力下，在元素周期表第VIII族贵金属存在下，优选130℃-200℃。

    Preparation of 2-alkylcyclopentanones
    3.
    发明授权
    Preparation of 2-alkylcyclopentanones 失效
    2-烷基环戊烷的制备

    公开(公告)号：US5081309A

    公开(公告)日：1992-01-14

    申请号：US065096

    申请日：1987-06-22

    申请人： Walter Gramlich ,  Wolfgang Lengsfeld

    发明人： Walter Gramlich ,  Wolfgang Lengsfeld

    IPC分类号： B01J23/00 ,  B01J23/40 ,  B01J23/44 ,  B01J23/54 ,  B01J23/63 ,  B01J27/00 ,  B01J27/185 ,  C07B61/00 ,  C07C45/00 ,  C07C45/68 ,  C07C45/73 ,  C07C49/395 ,  C07C67/00

    CPC分类号： C07C49/395 ,  C07C45/73

    摘要： Cyclopentanones monoalkylated in the 2-position and of the general formula I ##STR1## where R.sup.1 is a branched or straight-chain aliphatic group of 2 to 12 carbon atoms and R.sup.2 to R.sup.7 may be identical or different and are each hydrogen or alkyl of 1 to 5 carbon atoms, are prepared by a process in which a cyclopentanone of the general formula II ##STR2## or a corresponding cyclopentenone, is reacted with an aldehyde of the general formula III ##STR3## at from 80.degree. to 280.degree. C. in the presence of hydrogen in an autoclave, over a catalyst which contains, as active components, on the one hand an oxide or a phosphate of magnesium, aluminum, titanium or zinc or of one of the rare earth metals, and on the other hand a noble metal of group VIII of the periodic table, preferably palladium.The 2-alkylcyclopentanones obtainable according to the invention in a simple single-stage reaction with virtually complete conversion and high selectivity are important as intermediates and in particular as scents.

    摘要翻译： 其中R1是2至12个碳原子的支链或直链脂族基团和R2至R7的2-位单烷基化和通式I（I）中单环烷酮化可以相同或不同，各自为氢或 通过使通式II的环戊酮（II）或相应的环戊烯酮与通式III的醛（III）与醛反应的方法制备，其具有1至5个碳原子的烷基， 在氢气存在下，在高压釜中，在含有作为活性成分的镁，铝，钛或锌的一种或其中一种稀有金属的氧化物或磷酸盐的催化剂中，从80℃至280℃ 另一方面是周期表第VIII族的贵金属，优选钯。 在几乎完全转化和高选择性的简单的单阶段反应中，根据本发明可获得的2-烷基环戊烷酮作为中间体，特别是作为香料是重要的。

    Preparation of 1-alkyl- or 1-cycloalkylpiperazines
    4.
    发明授权
    Preparation of 1-alkyl- or 1-cycloalkylpiperazines 失效
    1-烷基 - 或1-环烷基哌嗪的制备

    公开(公告)号：US4736030A

    公开(公告)日：1988-04-05

    申请号：US791112

    申请日：1985-10-24

    申请人： Herbert Mueller ,  Dieter Voges ,  Wolfgang Lengsfeld

    发明人： Herbert Mueller ,  Dieter Voges ,  Wolfgang Lengsfeld

    IPC分类号： C07D295/02 ,  C07D295/023 ,  C07D405/04

    CPC分类号： C07D295/023

    摘要： 1-Alkyl- or 1-cycloalkylpiperazines are prepared by reacting piperazine with an alkanol or cycloalkanol in the presence of hydrogen and a hydrogenation/dehydrogenation catalyst by a process in which the reaction is carried out at from 130.degree. to 190.degree. C. under from 5 to 100 bar in the presence of from 5 to 40% by weight, based on the reaction mixture, of water, and the molar ratio of piperazine to alkanol or cycloalkanol is kept at from 1:1.5 to 1:8.

    摘要翻译： 1-烷基 - 或1-环烷基哌嗪通过在氢气和氢化/脱氢催化剂的存在下使哌嗪与链烷醇或环烷醇反应来制备，其中反应在130-190℃下进行， 在5至40重量％的存在下，基于反应混合物，水的摩尔比为5至100巴，哌嗪与链烷醇或环烷醇的摩尔比保持在1:1.5至1:8。