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    PRODUCTION OF 1,1-DICHLORO-2,2,2-TRIFLUOROETHYLLITHIUM
    85.
    发明专利
    PRODUCTION OF 1,1-DICHLORO-2,2,2-TRIFLUOROETHYLLITHIUM 失效

    公开(公告)号：JPS62209083A

    公开(公告)日：1987-09-14

    申请号：JP5181886

    申请日：1986-03-10

    申请人： AGENCY IND SCIENCE TECHN

    发明人： OKUHARA KUNIO ,  KODAIRA KAZUO

    IPC分类号： C07F1/02 ,  C07C27/00 ,  C07C29/14 ,  C07C29/143 ,  C07C29/40 ,  C07C31/34 ,  C07C67/00

    摘要： PURPOSE:To obtain the titled compound useful as a trifluoromethyl group introducing agent from a raw material obtainable easier than the well-known method advantageously, by reacting 1,1,1-trichloro-2,2,2-trifluoroethane with organolithium compound. CONSTITUTION:A compound shown by formula I is reacted with an organolithium compound (e.g. n-butyllithium) in an aprotic solvent (preferably ether such as diethyl ether) to give the aimed compound shown by formula II. This compound is obtained from the compound shown by formula I prepared easier than CF3CCl2H (raw material of well-known method) directly not by way of CF3CCl2H without using a specific mixed solvent at about -110 deg.C which is higher than the temperature of the well-known method advantageously. Further since the organolithium compound is converted to a corresponding chloride in this method, the chloride is recovered, reacted with lithium and the organolithium compound can be regenerated. The amount of the aimed compound formed can be indirectly monitored from the amount of the chloride formed.

    STABILIZATION OF METHYLENEIMINE COMPOUND
    88.
    发明专利
    STABILIZATION OF METHYLENEIMINE COMPOUND 失效

    公开(公告)号：JPS60146859A

    公开(公告)日：1985-08-02

    申请号：JP58384

    申请日：1984-01-06

    申请人： MITSUBISHI GAS CHEMICAL CO

    发明人： NISHIMURA TOSHIAKI ,  KUROKAWA MASAHIRO

    IPC分类号： C07C251/04 ,  C07C67/00 ,  C07C241/00 ,  C07F1/02

    摘要： PURPOSE:To preserve an methyleneimine compound useful as an instant adhesive and a raw material for various chemicals stably for a long period, by adding an organolithium compound to a cyclohexylmethyleneimide compound. CONSTITUTION:An organolithium compound shown by the formula R'-Li (R' is alkyl, aryl, or aralkyl) is added to a cyclohexylmethyleneimine compound shown by the formula (R is alkyl; n is 0-5), so that a methyleneimine compound comprising the cyclohexylmethyleneimide compound as an essential component is stabilized. An amount of the organolithium compound added is 1-1,000ppm, preferably 10-500ppm based on the methyleneimide compound comprising the cyclohexylmethyleneimide compound as an essential component.