Preparation of adipic acid
    31.
    发明授权
    Preparation of adipic acid 失效
    己二酸的制备

    公开(公告)号:US4931590A

    公开(公告)日:1990-06-05

    申请号:US205340

    申请日:1988-06-10

    摘要: Adipic acid is prepared by a process which comprises the following steps:(a) Hydroformylation of a pentenoic ester by reaction with carbon monoxide and hydrogen at elevated temperatures and under superatmospheric pressure in the presence of a cobalt carbonyl or rhodium carbonyl complex with formation of a mixture of 5-, 4- and 3-formylvaleric esters,(b) isolation of the 5-formylvaleric ester from the resulting mixture of 5-, 4- and 3-formylvaleric esters, a mixture essentially consisting of 4- and 3-formylvaleric esters remaining,(c) dehydrocarbonylation of the mixture consisting essentially of 4- and 3-formylvaleric esters in the presence of one or more elements of subgroup 8 of the Periodic Table at from 50.degree. to 400.degree. C. with formation of pentenoic esters, and recycling of the latter to stage (a) for hydroformylation,(d) oxidation of the 5-formylvaleric ester from stage (b) with molecular oxygen or a gas containing molecular oxygen to give a monoester of adipic acid, and(e) hydrolysis of the monoester of adipic acid to give adipic acid.

    摘要翻译: 己二酸通过包括以下步骤的方法制备:(a)在羰基或羰基铑羰基络合物的存在下,在一氧化碳和氢气下,在升高的温度和超大气压下与戊烯酸酯反应,加氢甲酰化形成 5-,4-和3-甲酰基戊酸酯的混合物,(b)从得到的5-,4-和3-甲酰基戊酸酯混合物中分离出5-甲酰基戊酸酯,基本上由4-甲酰基戊酰胺 剩余的酯,(c)在50℃至400℃下在元素周期表第8族的一种或多种元素存在下,基本上由4-甲酰基戊酸酯组成的混合物的脱氢羰基化,形成戊烯酸酯, 并将后者再循环到步骤(a)进行加氢甲酰化,(d)用分子氧或含有分子氧的气体从阶段(b)氧化5-甲酰基戊酸酯,得到己二酸的单酯,和(e) 水解己二酸的单酯得到己二酸。

    Preparation of 5-formylvaleric esters
    36.
    发明授权
    Preparation of 5-formylvaleric esters 失效
    5-甲酰戊酸酯的制备

    公开(公告)号:US5003102A

    公开(公告)日:1991-03-26

    申请号:US206751

    申请日:1988-06-15

    CPC分类号: C07C67/347

    摘要: 5-Formylvaleric esters are prepared by a process which comprises the following steps:(a) Hydroformylation of a pentenoic ester by reaction with carbon monoxide and hydrogen at elevated temperatures and under superatmospheric pressure in the presence of a carbonyl complex of a metal of group 8 of the Periodic Table with formation of a mixture of 5-, 4- and 3-formylvaleric esters,(b) Isolation of the 5-formylvaleric ester from the resulting mixture of 5-, 4- and 3-formylvaleric esters, a mixture essentially consisting of 4- and 3-formylvaleric esters remaining,(c) Cleavage of the mixture essentially consisting of 4- and 3-formylvaleric esters at from 50.degree. to 400.degree. C. in the presence of a catalyst to give pentenoic esters and(d) Recycling of the pentenoic esters to stage (a).

    摘要翻译: 5-甲酰戊酸酯通过包括以下步骤的方法制备:(a)在升高的温度和超大气压下,在第8组的金属的羰基络合物存在下,通过与一氧化碳和氢气反应来进行戊烯基酯的加氢甲酰化 的化合物,形成5-,4-和3-甲酰基戊酸酯的混合物,(b)从得到的5-,4-和3-甲酰基戊酸酯混合物中分离5-甲酰基戊酸酯,基本上 由4-和3-甲酰基戊酸酯组成,(c)在催化剂存在下,在50-400℃下将基本上由4-和3-甲酰基戊酸酯组成的混合物切割,得到戊烯酸酯和(d )将戊烯酸酯循环回到(a)阶段。

    Preparation of caprolactam
    37.
    发明授权
    Preparation of caprolactam 失效
    己内酰胺的制备

    公开(公告)号:US4767857A

    公开(公告)日:1988-08-30

    申请号:US133735

    申请日:1987-12-16

    IPC分类号: C07D201/08

    CPC分类号: C07D201/08

    摘要: Caprolactam is prepared by heating a 6-aminocaproic ester at 100.degree.-320.degree. C. in the presence of a reaction medium comprising an aromatic hydrocarbon which is liquid under reaction conditions and has a boiling point from 80.degree. to 240.degree. C., and isolating caprolactam from the reaction medium.

    摘要翻译: 在含有在反应条件下为液体并且沸点为80-240℃的芳族烃的反应介质存在下,在100-320℃下加热6-氨基己酸酯制备己内酰胺, 从反应介质中分离己内酰胺。

    Preparation of caprolactam
    38.
    发明授权
    Preparation of caprolactam 失效
    己内酰胺的制备

    公开(公告)号:US4730040A

    公开(公告)日:1988-03-08

    申请号:US7788

    申请日:1987-01-28

    IPC分类号: C07D223/04 C07D201/08

    CPC分类号: C07D201/08

    摘要: .epsilon.-caprolactam is prepared by a process in which(a) a 5-formylvalerate is reacted with water in the presence of an acidic agent at from 30.degree. to 200.degree. C.,(b) the 5-formylvaleric acid thus obtained is reacted with excess ammonia and hydrogen in the presence of a hydrogenation catalyst and of a solvent which is inert under the reaction conditions, at from 50.degree. to 150.degree. C. under superatmospheric pressure, and(c) after the ammonia has been separated off, the resulting solution of 6-aminocaproic acid is heated to 150.degree.-370.degree. C. and the caprolactam formed is isolated.

    摘要翻译: ε-己内酰胺通过以下方法制备:(a)在30℃至200℃下,在酸性试剂存在下,使5-甲酰基戊酸酯与水反应,(b)将所得的5-甲酰基戊酸反应 在氢化催化剂和在反应条件下为惰性的溶剂中,在超大气压下,在50-150℃下,过量的氨和氢,和(c)氨分离后, 将得到的6-氨基己酸溶液加热至150-370℃,形成己内酰胺。

    Preparation of 2-methyl-2-alkenals
    39.
    发明授权
    Preparation of 2-methyl-2-alkenals 失效
    2-甲基-2-烯醛的制备

    公开(公告)号:US4677230A

    公开(公告)日:1987-06-30

    申请号:US872965

    申请日:1986-06-11

    IPC分类号: C07C45/62 C07C45/67 C07C45/61

    CPC分类号: C07C45/62 C07C45/67

    摘要: 2-Methyl-2-alkenals of the formula ##STR1## where R.sup.1 and R.sup.2 are each hydrogen, alkyl which may additionally carry aromatic radicals, or an aromatic radical, are prepared by isomerizing a 2-alkylacrolein of the formula ##STR2## in the presence of hydrogen and of a catalyst which contains palladium and an oxide or salt of a rare earth metal as active components, at from 20.degree. to 120.degree. C. and under from 1 to 100 bar.

    摘要翻译: 其中R 1和R 2各自为氢,可以另外携带芳族基团的烷基或芳族基团的式“IMAGE”I的2-甲基-2-链烯通过将式II的2-烷基丙烯醛异构化 在氢气和含有钯和作为活性成分的稀土金属的氧化物或盐的催化剂存在下,在20-120℃和1-100巴条件下进行。