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    • 7. 发明授权
    • Preparation of 5-methylbutyrolactone
    • 5-甲基丁酰胺的制备
    • US5189182A
    • 1993-02-23
    • US236199
    • 1988-08-25
    • Rudolf KummerHeinz-Walter SchneiderWerner BertleffRolf FischerUwe VagtFritz NaeumannWolfgang HoelderichMatthias Schwarzmann
    • Rudolf KummerHeinz-Walter SchneiderWerner BertleffRolf FischerUwe VagtFritz NaeumannWolfgang HoelderichMatthias Schwarzmann
    • C07D315/00
    • C07D315/00
    • 5-Methylbutyrolactone is prepared by a process in which a pentenoic ester of the formula IX--CO.sub.2 R (I),where X is CH.sub.2 .dbd.CH--CH.sub.2 --CH.sub.2 --, CH.sub.3 --CH.dbd.CH--CH.sub.2 -- or CH.sub.3 --CH.sub.2 --CH.dbd.CH-- and R is alkyl, cycloalkyl, aralkyl or aryl, or a mixture of these esters is reacted with water at from 50.degree. to 350.degree. C. in the presence or absence of a diluenta) over a zeolite and/or phosphate catalyst orb) in the presence of from 0.01 to 0.25 mole of a sulfonic acid, a Lewis acid and/or a non-oxidizing mineral acid per mole of pentenoic ester or over from 0.1 to 40% by weight, based on the pentenoic ester, of a strongly acidic ion exchanger as a catalyst in a first stage, or the pentenoic ester of the formula I, where X and R have the stated meanings, is hydrolyzed in a first stage with the aid of a strongly acidic ion exchanger as a catalyst to give the pentenoic acid of the formula I, where R is hydrogen, and the resulting pentenoic acid is subjected to cyclization in a second stage in the presence of from 0.005 to 0.1 mole of a sulfonic acid, a Lewis acid or a non-oxidizing mineral acid per mole of pentenoic acid or over from 0.1 to 20% by weight, based on the pentenoic acid, of a strongly acidic ion exchanger at from 50.degree. to 350.degree. C.
    • 通过以下方法制备5-甲基丁内酯,其中式I X-CO 2 R(I)的戊烯酸酯,其中X为CH 2 = CH-CH 2 -CH 2 - ,CH 3 -CH = CH-CH 2 - 或CH 3 -CH 2 -CH = CH-和R是烷基,环烷基,芳烷基或芳基,或这些酯的混合物与水在50-350℃下在存在或不存在稀释剂a)的情况下与沸石和/或磷酸盐 催化剂或b)在0.01至0.25摩尔磺酸,路易斯酸和/或非氧化性无机酸/摩尔烯酸酯存在下或基于戊烯酸酯为0.1至40重量% 的作为第一阶段的催化剂的强酸性离子交换剂或其中X和R具有所述含义的式I的戊烯酸在第一阶段中借助于强酸性离子交换剂作为 催化剂得到式I的戊烯酸,其中R是氢,所得戊烯酸在第二阶段中在0.005t的存在下进行环化 o 0.1摩尔磺酸,路易斯酸或非氧化性无机酸/摩尔烯酸,或超过0.1-20重量%,基于戊烯酸,强酸性离子交换剂为50〜 350℃
    • 10. 发明授权
    • Preparation of adipic acid
    • 己二酸的制备
    • US4931590A
    • 1990-06-05
    • US205340
    • 1988-06-10
    • Rudolf KummerFranz MergerWerner BertleffRolf Fischer
    • Rudolf KummerFranz MergerWerner BertleffRolf Fischer
    • B01J31/20C07B61/00C07C51/00C07C51/09C07C55/14C07C67/00C07C67/29C07C67/347C07C67/39C07C69/44C07C69/67
    • C07C67/347C07C51/09C07C67/39
    • 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.
    • 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。