• 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:
    1499180 Ureas and cyclic ureas AMIC SpA 8 Dec 1975 [10 Dec 1974] 50307/75 Heading C2C Ureas and cyclic ureas of the formula wherein n is 2, 3 or 4 and R and R<SP>1</SP> are hydrogen atoms or substituted or unsubstituted hydrocarbon radicals, are obtained by heating the corresponding carbamates of the formula M being an alkali metal or alkaline earth metal.
    公开号:SU900804A3
    申请号:SU752197703
    申请日:1975-12-10
    公开日:1982-01-23
    发明作者:Чиприани Джоаккино；Нери Карло
    申请人:Аник С.П.А. (Фирма)；
    IPC主号:
    专利说明:

    3,90080 4
    权利要求:
    Claims (1)
    [1]
    Claims of the invention where R has the indicated meaning;
    The method of producing substituted is alkali metal,
    wines of general formula I are subjected to pyrolysis at a temperature
    HRN-C-NHH300 C and a vacuum of 20 mm. Hg st,
    at(
    where R is phenyl, {4 stoichiiki information,
    characterized in that taken into account in the examination
    in order to simplify the process, carbamag. Redd E.N. Chemistry of Carbon
    General Formula II: Compounds. T, III, Part A, 195, p. 192
    HRN-COOHe, “in (prototype).
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    同族专利:
    公开号 | 公开日
    US4063021A|1977-12-13|
    LU73953A1|1976-07-01|
    GB1499180A|1978-01-25|
    JPS5182225A|1976-07-19|
    NL172951B|1983-06-16|
    IE42456L|1976-06-10|
    ES443591A1|1977-05-01|
    IE42456B1|1980-08-13|
    SE7513879A|1976-06-11|
    FR2294169A1|1976-07-09|
    DK557075A|1976-06-11|
    SE7513879L|1976-06-11|
    CA1058174A|1979-07-10|
    NL172951C|1983-11-16|
    CH624097A5|1981-07-15|
    ZA757617B|1976-11-24|
    JPS594423B2|1984-01-30|
    NO754162L|1976-06-11|
    AT349487B|1979-04-10|
    IT1026907B|1978-10-20|
    SE431203B|1984-01-23|
    BE836387A|1976-06-08|
    NL7514362A|1976-06-14|
    FR2294169B1|1982-05-28|
    DE2555582A1|1976-06-16|
    ATA933175A|1978-09-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2276696A|1939-10-06|1942-03-17|Sharples Chemicals Inc|Manufacture of homologues of urea|
    US3053891A|1959-05-05|1962-09-11|Chemical Construction Corp|Process for production of urea|
    US3923833A|1968-05-01|1975-12-02|Hoffmann La Roche|N-{8 ethyl{9 carbamates|JPS57139069A|1981-02-20|1982-08-27|Nippon Tokushu Noyaku Seizo Kk|Substituted tetrahydropyrimidinone derivative, its preparation and herbicide|
    US4405794A|1981-12-18|1983-09-20|The Dow Chemical Company|Preparation of 2-oxazolidinone and ethyleneurea|
    JPS58140078A|1982-02-16|1983-08-19|Nippon Tokushu Noyaku Seizo Kk|Methyl-substituted tetrahydro-2-pyrimidinone derivative, its preparation, its intermediate, preparation of said intermediate, and herbicide|
    JPH0333420U|1989-08-10|1991-04-02|
    DE19743760A1|1997-10-02|1999-04-08|Basf Ag|Process for the preparation of cyclic urea derivatives|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT30341/74A|IT1026907B|1974-12-10|1974-12-10|PROCEDURE FOR THE SYNTHESIS OF UREE|
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