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    Preparation of 5-methylbutyrolactone
    2.
    发明授权
    Preparation of 5-methylbutyrolactone 失效
    5-甲基丁酰胺的制备

    公开(公告)号：US5189182A

    公开(公告)日：1993-02-23

    申请号：US236199

    申请日：1988-08-25

    申请人： Rudolf Kummer ,  Heinz-Walter Schneider ,  Werner Bertleff ,  Rolf Fischer ,  Uwe Vagt ,  Fritz Naeumann ,  Wolfgang Hoelderich ,  Matthias Schwarzmann

    发明人： Rudolf Kummer ,  Heinz-Walter Schneider ,  Werner Bertleff ,  Rolf Fischer ,  Uwe Vagt ,  Fritz Naeumann ,  Wolfgang Hoelderich ,  Matthias Schwarzmann

    IPC分类号： C07D315/00

    CPC分类号： C07D315/00

    摘要： 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.

    摘要翻译： 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℃

    Preparation of alkenecarboxylic esters
    3.
    发明授权
    Preparation of alkenecarboxylic esters 失效
    烷基羧酸酯的制备

    公开(公告)号：US5144061A

    公开(公告)日：1992-09-01

    申请号：US116865

    申请日：1987-11-05

    申请人： Wolfgang Hoelderich ,  Fritz Naeumann ,  Rolf Fischer

    发明人： Wolfgang Hoelderich ,  Fritz Naeumann ,  Rolf Fischer

    IPC分类号： B01J27/16 ,  B01J27/00 ,  B01J29/00 ,  B01J29/04 ,  B01J29/06 ,  B01J29/08 ,  B01J29/82 ,  B01J29/83 ,  C07B61/00 ,  C07C67/03 ,  C07C67/327 ,  C07C69/533

    CPC分类号： C07C67/03

    摘要： The present invention relates to a method for producing optically active alcohol derivatives, which are useful as fungicides, herbicides or plant growth regulators, represented by the formula, ##STR1## by carrying out the asymmetric reduction of a ketone compound represented by the formula, ##STR2## with a boron hydride-reducing agent modified with an optically active amino alcohol represented by the formula, ##STR3## and also relates to the boron hydride type compound obtained by reacting the above optically active amino alcohol with a boron hydride compound and its production method.

    摘要翻译： 本发明涉及一种光学活性醇衍生物的制备方法，其可用作杀真菌剂，除草剂或植物生长调节剂，由下式表示：通过进行由式表示的酮化合物的不对称还原， IMAGE>与用式表示的光学活性氨基醇改性的硼氢化物还原剂，也涉及通过使上述光学活性氨基醇与硼氢化合物反应获得的硼氢化物型化合物及其生产 方法。

    Preparation of 3-pentenoates from 2-pentenoates
    8.
    发明授权
    Preparation of 3-pentenoates from 2-pentenoates 失效
    由2-戊烯酸酯制备3-戊烯酸酯

    公开(公告)号：US4845269A

    公开(公告)日：1989-07-04

    申请号：US125560

    申请日：1987-11-25

    申请人： Rolf Fischer ,  Wolfgang Hoelderich ,  Manfred Sauerwald

    发明人： Rolf Fischer ,  Wolfgang Hoelderich ,  Manfred Sauerwald

    IPC分类号： B01J27/16 ,  B01J23/02 ,  B01J27/00 ,  B01J27/18 ,  B01J29/00 ,  B01J29/08 ,  B01J29/70 ,  C07B61/00 ,  C07C67/333 ,  C07C69/52 ,  C07C69/533

    CPC分类号： C07C67/327 ,  B01J29/084 ,  B01J29/40 ,  B01J29/86 ,  C07C319/18 ,  C07C67/31 ,  C07D295/15 ,  B01J2229/186 ,  B01J2229/20 ,  B01J2229/42

    摘要： 3-pentenoates are prepared from 2-pentenoates by a process in which(a) a 2-pentenoate of the formula ##STR1## where R.sup.1 is alkyl of 1 to 12 carbon atoms, cycloalkyl of 5 to 8 carbon atoms, aralkyl of 7 to 10 carbon atoms or aryl of 6 to 10 carbon atoms, is reacted with a compound of the formula IIR.sup.2 -X-H IIwhere R.sup.2 has the meanings given for R.sup.1 and X is an oxygen or sulfur atom, or with a compound of the formula III ##STR2## where R.sup.3 is hydrogen or R.sup.3 and R.sup.4 are each alkyl of 1 to 12 carbon atoms, cycloakkyl of 5 to 8 carbon atoms, aralkyl of 7 to 10 carbon atoms or aryl of 6 to 10 carbon atoms, and R.sup.3 and R.sup.4 together with the nitrogen atom on which they are substituents may form a 5-membered to 7-membered ring which may additionally contain a nitrogen or oxygen atom as a hetero atom, at from 20.degree. to 300.degree. C., in the presence or absence of a basic catalyst, to give a compound of the formula IV ##STR3## where Y is --XR.sup.2 or ##STR4## in which X, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the above meanings, and(b) the compound of the formula IV is cleaved in the liquid or gas phase in the presence of an acidic catalyst at from 150.degree. to 450.degree. C. to give a mixture of 3- and 2-pentenoates, and the 3-pentenoate is isolated.

    摘要翻译： 通过以下方法由2-戊烯酸酯制备3-戊烯酸酯，其中（a）式Ⅰ的2-戊烯酸酯，其中R 1为1至12个碳原子的烷基，5至8个碳原子的环烷基，7个芳烷基 至10个碳原子或6至10个碳原子的芳基与式II R2-XH II化合物反应，其中R2具有对R 1给定的含义，X是氧或硫原子，或与式 III，其中R 3是氢或R 3和R 4各自为1至12个碳原子的烷基，5至8个碳原子的环烷基，7至10个碳原子的芳烷基或6至10个碳原子的芳基， R4与它们是取代基的氮原子一起可以形成5元至7元环，其可以在20℃至300℃下另外含有作为杂原子的氮原子或氧原子， 不存在碱性催化剂，得到其中Y是-XR2或其中X，R1，R2，R3和R4具有上述m的式IV的化合物IV （b）在150℃至450℃的酸性催化剂存在下，式IV化合物在液相或气相中裂解，得到3-和2-戊烯酸酯的混合物，并且 3-戊烯酸酯是分离的。