• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A process for preparing monochloropinacoline (1-chloro-3,3-dimethyl-butan-2-one) by contacting a stoichiometric excess of pinacoline with chlorine at a temperature of -20 DEG to +70 DEG C.
    公开号:SU799644A3
    申请号:SU782602549
    申请日:1978-04-14
    公开日:1981-01-23
    发明作者:Кранц Экард；Шубарт Рюдигер；Шварц Герберт；Зигле Петер；Штойде Гейнрих
    申请人:Байер Аг (Фирма)；
    IPC主号:
    专利说明:

    The method proceeds as follows:
    Z9
    CH, -C-C (GHj,),, -0-0 (
    Tnse. j
    The method can be carried out under reduced, normal or elevated pressure. Anhydrous pinacoline can be used, which is obtained by distilling technical pinacol on.
    Typically, the process is carried out in the absence of light.
    Typically, chlorine is introduced into the reaction chamber as a gas. Chlorine can be used without further thinners. However, it is also possible to dilute chlorine gas with an inert gas, such as nitrogen or argon. The amount of diluent may be up to 90% (preferably 3050%) of the gas used. The present method can be carried out both periodically and continuously.
    Example 1. In the upper part (see drawing) of column 2 with glass plates (13 plates with a cross section of 50 mm), line 3 is filled with 350 ml / h (280 g / h, 2.8 mol / h of pinacoline containing water 0.1 wt.%. Water-containing picolics are evaporated and fed via condensation pipe 4 to a water-cooled reflux condenser 5, from where pipeline 6 is fed to a cooler 7, in which it is cooled to. From the cooler 7, pinacolin is fed into the reactor 8, which at a speed of 1 m / s, it is subjected to interaction with chlorine supplied through the pipeline 9 in the amount of 198.5 g / h (2, 8 mol / l). The reaction is carried out at
    -10 C. The amount of pinacoline is maintained at 2800 g / h (28 mol / h). The molar ratio of pinacolin to chlorine is 11: 1. Via line 10, the reaction product is fed to the 10th plate of column 2, and then it is separated. Unreacted pinacoline and the resulting hydrogen chloride through conduit 4 is withdrawn from the top of column 1 2. Pinacoline is condensed in a reflux condenser 5 and
    0 is fed back to the reaction with chlorine. From the top of the reflux condenser 5, 2.8 mol / h of hydrogen chloride is removed via conduit 11. From the bottom of 12 columns 2 through the pipeline 13
    354.2 g / h (92.5% of the theoretically possible) monochloropinacoline (MHP) was removed from T. 173 ° C.
    Examples 2-15. Example 1 is repeated with the differences shown in the table.
    权利要求:
    Claims (1)
    [1]
    Claim
    The method of obtaining monochloropinacoline by reacting pinacoline with chlorine, characterized in that, in order to increase the yield of the target product, the process is carried out with a molar ratio of pinacoline and chlorine 2-16: 1 and a temperature from -20 to + 70 ° С.
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    同族专利:
    公开号 | 公开日
    JPS53130615A|1978-11-14|
    DE2716896C2|1979-06-28|
    FR2387208A1|1978-11-10|
    DK164878A|1978-10-17|
    GB1574548A|1980-09-10|
    BE865972A|1978-10-16|
    NL190843B|1994-04-18|
    IT1105006B|1985-10-28|
    NL7803950A|1978-10-18|
    JPS6126769B2|1986-06-21|
    FR2387208B1|1984-09-14|
    BR7802320A|1978-12-19|
    DK170798B1|1996-01-22|
    DE2716896B1|1978-11-02|
    US4196150A|1980-04-01|
    IT7848903D0|1978-04-14|
    CS207718B2|1981-08-31|
    HU174535B|1980-02-28|
    DD135823A5|1979-05-30|
    IL54499A|1980-10-26|
    IL54499D0|1978-07-31|
    CH638479A5|1983-09-30|
    NL190843C|1994-09-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE698778C|1934-11-11|1941-07-10|I G Farbenindustrie Akt Ges|Process for the preparation of organic monochloro or monobromo compounds|
    US2120392A|1937-12-30|1938-06-14|Goodrich Co B F|Continuous process for the chlorination of ketones|
    US2235562A|1938-09-01|1941-03-18|Eastman Kodak Co|Method for producing chlorinated ketones|
    US2243484A|1939-04-28|1941-05-27|Commercial Solvents Corp|Process for the preparation of monohalogenated ketones|
    DE954694C|1952-12-28|1956-12-20|Basf Ag|Process for the chlorination of insoluble or only slightly water-soluble ketones or secondary alcohols of the aliphatic or cycloaliphatic series|
    US3397240A|1962-07-24|1968-08-13|Merck & Co Inc|Process for the monohalogenation of acetone|
    JPS6312048B2|1977-05-10|1988-03-17|Shionogi & Co|DE3049461A1|1980-12-30|1982-09-09|Bayer Ag, 5090 Leverkusen|METHOD FOR PRODUCING MONOCHLORMETHYLKETONES|
    DE3204788A1|1982-02-11|1983-08-18|Bayer Ag, 5090 Leverkusen|METHOD FOR PRODUCING 5-SUBSTITUTED 1-CHLORINE-3,3-DIMETHYLPENTAN-2-ONES|
    DE3400829A1|1984-01-12|1985-07-18|Basf Ag, 6700 Ludwigshafen|ALPHA-HALOGEN-PHENOXYALKYLKETONE, PHENOXYALKYLKETONE, METHOD FOR THE PRODUCTION THEREOF AND THEIR USE AS INTERMEDIATE PRODUCTS FOR THE PRODUCTION OF FUNGICIDES|
    US4642385A|1985-11-19|1987-02-10|Mobay Corporation|Preparation of monochloropinacolone|
    CN107686443A|2017-09-27|2018-02-13|南通利奥化工科技有限公司|A kind of production method of chlorine pinacoline|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2716896A|DE2716896C2|1977-04-16|1977-04-16|
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