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    Production of halogen containing organotin compounds
    94.
    发明授权
    Production of halogen containing organotin compounds 失效
    含卤素的有机锡化合物的生产

    公开(公告)号：US3398169A

    公开(公告)日：1968-08-20

    申请号：US47055465

    申请日：1965-07-08

    Applicant: STUDIENGESELLSCHAFT KOHLE MBH

    Inventor： PAUL NEUMANN WILHELM ,  ALFRED PEDAIN JOSEF

    IPC: C07F7/22

    CPC classification number: C07F7/2232 ,  C07F7/2216

    Abstract: Halogen-containing organo-tin compounds are prepared by reacting organo-tin-halohydrides with compounds having unsaturated groups (e.g. olefins, alkynes, aldehydes, ketones, unsaturated nitriles, Schiff's bases, and azo compounds) preferably in the presence of a radical producing catalyst (e.g. benzyl hyponitrile, azoisobutyric dinitrile or an azoisobutyric dialkyl ester) at less than 50 DEG C. with or without a solvent in an inert atmosphere (N2). Alkyl, aryl or aralkyl tin halohydrides of the formulae R2Sn(X)H,RSn(X)H2 or RSn(X2)H (preferably where R=C1-C8 alkyl or simple aryl, e.g. Ph) are prepared in situ from the corresponding organo-tin hydrides and organotin halides and may be reacted with the unsaturated compound to give organo-tin halohydrides with dissimilar organo-radicals and/or containing functional groups. The Sn-H group adds across the multiple bond. The following compounds are among those prepared in the examples: Ex. 2: (isoBu)2Sn(Br)-CH2-CH2CN; Ex. 3: Ph2Sn(Cl)-CH2-CHMePh; Ex. 5: Ph2Sn(Cl)(CH2)6-Sn(Cl)Ph2; Ex. 6: (nBu)2Sn(Cl)(CH2)3O(CH2)2OH; Ex. 11: EtSn(Br)2CH=CHPh; Ex. 14: (isoBu)2Sn(F)(CH2)3OH; Ex. 16: (nBu)2Sn(Cl)-N(nBu)CH2Ph.

    Abstract translation: 含有卤素的有机锡化合物是通过有机锡卤化物与具有不饱和基团的化合物（例如烯烃，炔烃，醛，酮，不饱和腈，希夫碱和偶氮化合物）反应而制备的，优选在自由基产生催化剂存在下 （例如苄基低腈，偶氮异丁腈或偶氮异丁基二烷基酯）在惰性气氛（N 2）中，在或不用溶剂下在小于50℃下进行。 式R2Sn（X）H，RSn（X）H2或RSn（X2）H（优选其中R = C1-C8烷基或简单芳基，例如Ph）的烷基，芳基或芳烷基锡卤素原位从相应的 有机锡氢化物和有机锡卤化物，并且可以与不饱和化合物反应，得到具有不同有机基团和/或含有官能团的有机锡卤化物。 Sn-H组增加了多重键。 以下化合物是实施例中制备的化合物： 2：（异丁基）2Sn（Br）-CH 2 -CH 2 CN; 例如 3：Ph 2 Sn（Cl）-CH 2 -CHMePh; 例如 5：Ph2Sn（Cl）（CH2）6-Sn（Cl）Ph2; 例如 6：（nBu）2Sn（Cl）（CH 2）3 O（CH 2）2 OH; 例如 11：EtSn（Br）2CH = CHPh; 例如 14：（异丁基）2Sn（F）（CH 2）3 OH; 例如 16：（nBu）2Sn（Cl）-N（nBu）CH 2 Ph。

    Process for the conversion of highly alkylated tin compounds into lower alkylated tin halides
    98.
    发明授权
    Process for the conversion of highly alkylated tin compounds into lower alkylated tin halides 失效
    将高度烷基化的锡化合物转化为低级烷基化锡卤化物的方法

    公开(公告)号：US3248411A

    公开(公告)日：1966-04-26

    申请号：US18209562

    申请日：1962-03-23

    Applicant: STUDIENGESELLSCHAFT KOHLE MBH

    Inventor： PAUL NEUMANN WILHELM ,  GOTTFRIED BURKHARDT

    IPC: C07F7/22

    CPC classification number: C07F7/22 ,  C07F7/2208 ,  C07F7/2216

    Abstract: Alkyl tin trihalides may be made by reacting a tetra-alkyl tin with tin tetra-chloride, -bromide or -iodide in the molar ratio 1:2. The reaction takes place in two stages which may be carried out independently: SnR4=SnX4--->RSnX3+R3SnX R3SnX=SnX4--->RSnX3+R2SnX2 Using short, unbranched chain alkyl groups the reaction may be initiated at between 0 DEG and 20 DEG C. and is faster than when using longer or branched chain alkyl groups, which require initiation at elevated temperatures. The process is preferably carried out by adding the tetraalkyl tin dropwise to the tin tetrahalide, thus ensuring an excess of the latter throughout the reaction. If desired, the tin tetrahalide may be used as a complex, e.g. with an ether. The product, which contains RSnX3 and R2SnX2 may be separated into its constituents by distillation. The process may be modified using a trialkyltin halide in place of the tetraalkyl tin.

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