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    • 10. 发明专利
    • Improvements in the Manufacture of Dichloro-derivatives of Hydrocarbons having the Chlorine Atoms Attached to Different Carbon Atoms.
    • GB191200277A
    • 1913-01-02
    • GB191200277D
    • 1912-01-03
    • PERKIN WILLIAM HENRYWEIZMANN CHARLESDAVIES HAROLD
    • PERKIN WILLIAM HENRYWEIZMANN CHARLESDAVIES HAROLD
    • C07B39/00C07C17/10
    • 277. Perkin, W. H., Weizmann, C., and Davies, H. Jan. 3. Dichlorhydrocarbons such as dichlorbutanes and dichlorpentanes are obtained by chlorinating vapours of monochlorhydrocarbons, for example, isoamylchloride, while regulating the access of chlorine so that it is used up immediately on coming into contact with these vapours, and while allowing the removal of the dichlor product as it is formed. In an example, chlorine is passed together with an excess of the compound to be chlorinated through a heated tube &c., the product passing at once from the reaction zone. Definite fractions each containing a definite dichlor substitution product are obtained by fractional distillation of the product. When chlorinating isoamyl chloride, the compounds are obtained. Specifications 4572/10, 9721/11, and /12 are referred to. Isopropylacetylene; organo - mercuric compounds; methylisopropylketone. - Isopropylacetylene is produced by removing two molecular proportions of hydrochloric acid from the compound 3CH3 # C HCH.Cl - CH2.Cl. On treatment of the hydrocarbon with aqueous mercuric bromide and decomposing the product, methylisopropylketone results. Isoprene and its dibrom- and dichlor-hydrins; caoutchouc.-By elimination of two molecular proportions of hydrochloric acid from the compound (CH3)2C.Cl.CH2.CH2.Cl isoprene results which can be transformed into a dibromhydrin. The isoprene yields a caoutchouc substance when polymerized, and also a dihydrochloride identical with the product of reaction of hydrochloric acid with unsymmetrical dimethylallene. Nitriles; acid amides; #-methyladipic acid; glycols.-The compound when treated with alcoholic potassium cyanide yields a dinitrile, which on hydrolysis gives #- methyladipic acid. On heating the same dichlorhydrocarbon with potassium acetate and acetic acid, a diacetate results which on hydrolysis gives the corresponding glycol. When treated with phenylisocyanate, the glycol yields diphenylurethane.