Continuous photooximation of cyclododecane

    公开(公告)号:GB1136747A

    公开(公告)日:1968-12-18

    申请号:GB1722566

    申请日:1966-04-20

    Applicant: BASF AG

    Abstract: 1,136,747. Cyclododecane oxime. BADISCHE ANILIN- & SODA-FABRIK A.G. 20 April, 1966 [21 April, 1965], No. 17225/66. Heading C2C. Cyclododecane is converted to its oxime by treating a solution of cyclododecane in chlorobenzene with a nitrosating agent and with light having a wavelength of 360-600 millimicrons while mixing the reaction mixture with turbulence, the cyclododecane oxime being removed from the reaction mixture outside the reaction zone by extraction with strong sulphuric acid. Suitable nitrosating agents are, for example, nitrosyl chloride or compounds which form nitrosyl chloride in the reaction medium. If desired, the process may be carried out in the presence of hydrogen chloride.

    Production of ªŠ-cyanocaproic acid

    公开(公告)号:GB1087603A

    公开(公告)日:1967-10-18

    申请号:GB505265

    申请日:1965-02-05

    Applicant: BASF AG

    Abstract: e -Cyanocaproic acid is obtained by reacting a -cyanocyclohexanone with an alkali metal glycolate in a glycol as solvent at 150 DEG -250 DEG C., with substantial exclusion of water, i.e. more than 50 mole per cent of the alkali metal ions present being in the form of glycolate. The preferred reaction temperature is 150 DEG -250 DEG C.

    25.
    发明专利
    未知

    公开(公告)号:FR1423579A

    公开(公告)日:1966-01-03

    申请号:FR4601

    申请日:1965-02-05

    Applicant: BASF AG

    28.
    发明专利
    未知

    公开(公告)号:FR1365110A

    公开(公告)日:1964-06-26

    申请号:FR943588

    申请日:1963-08-02

    Applicant: BASF AG

    Inventor: METZGER HORST

    Production of ªÏ-laurolactam
    29.
    发明专利

    公开(公告)号:GB948544A

    公开(公告)日:1964-02-05

    申请号:GB4658361

    申请日:1961-12-29

    Applicant: BASF AG

    Abstract: o -Laurolactam is prepared by mixing cyclododecane carboxylic acid or an alkali metal or alkaline earth metal salt thereof with at least one, and up to two, equivalents of nitroacting agent derived from nitrous acid in the presence of at least one mole of sulphuric acid and/or oleum per mole of cyclododecane carboxylic acid. Suitable nitrosating agents are, for example, nitrosyl chloride, alkyl nitrites, sodium nitrite, dinitrogen trioxide or, preferably, nitrosylsulphonic acid or anhydride. The reaction temperature in general is 0 DEG to 150 DEG C, but it is recommendable to use at least 35 DEG C., and the reaction may be initiated by addition of a small amount, e.g. 1 to 20% by weight, of o -laurolactam to the mixture of reactants or by temporarily increasing the reaction temperature. In a preferred embodiment the nitrosating agent in sulphuric acid or oleum solution is introduced into a solution or suspension of cyclododecane carboxylic acid, or salt thereof, in sulphuric acid or a solvent, e.g. cyclohexane, at such a rate that CO2 escapes continuously. After the complete addition the mixture is stirred for a short time and poured on to ice or into water to precipitate the o -laurolactam. The cyclododecane carboxylic acid or alkali metal or alkaline earth metal salts thereof may be prepared by the trimerisation of butadiene to cyclododecatriene (1, 5, 9), conversion of the trimer into monohydroxymethyl cyclododecane by the oxo synthesis and oxidation of the last mentioned compound to the acid by, for example, alkali fusion.

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