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    Method of making 5,6-dihydro-2-methyl-N-phenyl-1,4-oxathiin-3-carboxamide
    41.
    发明公开
    Method of making 5,6-dihydro-2-methyl-N-phenyl-1,4-oxathiin-3-carboxamide 失效
    制备5,6-二羟基-2-甲基-N-苯基-1,4-氧化物-3-羧酰胺的方法

    公开(公告)号：EP0042182A3

    公开(公告)日：1981-12-30

    申请号：EP81106224

    申请日：1979-09-05

    申请人： UNIROYAL LTD.

    发明人： Znotins, Andrew ,  Brewer, Arthur D.

    IPC分类号： C07D327/06 ,  C07D327/04 ,  A01N43/32

    CPC分类号： C07D327/06 ,  C07D327/04

    摘要： A method of making 2-methyl-N-phenyl-1,3-oxathiolane-2-acetamide 3-oxide characterised in that the method comprises bringing together 2-methyl-N-phenyl-1,3--oxathiolane-2-acetamide und hydrogen peroxide under basic conditions in the presence of a catalytic quantity of a heavy metal compound oxidation catalyst in a liquid medium comprising water or water plus at least one nonprotic organic solvent liquid selected from (a) an aromatic hydrocarbon solvent having a boiling point not greater than 145°C, (b) a chlorinated hydrocarbon solvent having a boiling point not greater than 130°C, and (c) a solvent having a boiling point not greater than 130°C which is an alkyl ester of an aliphatic carboxylic acid, and subjecting the resulting mixture while agitating to a temperature of from 0-25°C, whereby 2-methyl-N--phenyl-1,3-oxathiolane-2-acetamide 3-oxide is formed. The product may be used for the preparation of 5,6-di- hydro-2-methyl-N-phenyl-1,4-oxathi in 3-carboxamide which is a known bactericide and fungicide.

    摘要翻译： 制备5,6-二氢-2-甲基-N-苯基-1,4-氧硫杂环己烯-3-甲酰胺的方法是基于氧硫杂环戊烷的用途，即2-甲基-N-苯基-1,3- 氧化硅烷-2-乙酰胺，其可以通过在酸性条件下在溶剂介质（芳族烃，氯化烃或脂族酸的烷基酯）中将2-巯基乙醇与乙酰乙酰苯胺缩合形成。 在碱性条件下，在催化量的钨酸钠等金属化合物的存在下，将所述氧化硅与无水纯化的过氧化氢在水或水 - 有机溶剂混合物中反应，形成2-甲基-N- 苯基-1,3-氧硫杂环戊烷-2-乙酰胺3-氧化物。 所述氧硫杂环戊烷氧化物在溶解在氯化烃或脂肪族羧酸的烷基酯中或悬浮于芳香族烃中时，在酸性条件下，在催化剂量的存在下进行环膨胀反应 鎓化合物，即季铵盐或锍，氧化锍或鏻化合物，以形成水，形成5,6-二氢-2-甲基-N-苯基-1,4-氧硫杂环己烷-3-甲酰胺。 该产品是已知的杀菌剂和杀真菌剂。

    METHOD FOR PRODUCING CYCLIC DISULFONIC ACID ESTER
    50.
    发明授权
    METHOD FOR PRODUCING CYCLIC DISULFONIC ACID ESTER 有权
    工艺生产环DISULFONSÄUREESTERS

    公开(公告)号：EP2036899B1

    公开(公告)日：2011-11-02

    申请号：EP07745255.5

    申请日：2007-06-14

    申请人： Wako Pure Chemical Industries, Ltd.

    发明人： OKAMOTO, Kuniaki ,  WATAHIKI, Tsutomu ,  SUMINO, Motoshige

    IPC分类号： C07D327/00

    CPC分类号： C07D327/00 ,  C07D327/06

    摘要： Disclosed is a commercially advantageous method for producing a cyclic disulfonic acid ester with high yield. Specifically disclosed is a method for producing a cyclic disulfonic acid ester represented by the general formula (3) below, which is characterized in that a silver alkanedisulfonate represented by the general formula (1) below and a dihaloalkane represented by the general formula (2) below are reacted in a nonpolar solvent. (1) (2) (3) (In the formulae, X1 and X2 independently represent a chlorine atom, a bromine atom or an iodine atom; and Y and Z independently represent a substituted or unsubstituted alkylene chain which may have a heteroatom in the chain.)