Certain sulfonyl carbamate on thiocarbamate intermediates
    1.
    发明授权
    Certain sulfonyl carbamate on thiocarbamate intermediates 失效
    某些磺酰氨基甲酸酯在硫代氨基甲酸酯中间体

    公开(公告)号:US4668800A

    公开(公告)日:1987-05-26

    申请号:US708204

    申请日:1985-03-04

    CPC分类号: C07D521/00 C07D333/38

    摘要: There is described a process for producing sulfonylureas of the formula ##STR1## wherein G is an unsubstituted or substituted furanyl, thienyl, pyrrolyl, pyridinyl or phenyl radical,X is alkyl, haloalkyl, alkoxy, alkylthio, halogen, haloalkoxy, alkylamino or dialkylamino,Y is alkyl, alkoxy or haloalkoxy,Z is a nitrogen atom or the methyne group --CH.dbd..This novel process comprises reacting a sulfonamide of the formulaG--SO.sub.2 --NH.sub.2,in the presence of a base, with a chloroformic acid ester of the formulaCl--CO--Q--T,or a sulfonyl chloride of the formulaG--SO.sub.2 Cl,in the presence of a base, with a urethane of the formulaH.sub.2 N--CO--Q--T;and converting the formed carbamate of the formulaG--SO.sub.2 --NH--CO--Q--Tby reaction with an amine of the formula ##STR2## into the sulfonylurea of the above formula. There are also described novel sulfonylcarbamates of the above formula as intermediates.

    摘要翻译: 描述了一种制备式IMA的磺酰脲的方法,其中G是未取代或取代的呋喃基,噻吩基,吡咯基,吡啶基或苯基,X是烷基,卤代烷基,烷氧基,烷硫基,卤素,卤代烷氧基,烷基氨基或二烷基氨基, Y是烷基,烷氧基或卤代烷氧基,Z是氮原子或甲炔基-CH =。 该新方法包括使式G-SO 2 -NH 2的磺酰胺在碱的存在下与式Cl-CO-QT的氯甲酸酯或式G-SO 2 Cl的磺酰氯反应, 碱的存在与式H2N-CO-QT的氨基甲酸酯反应; 并且通过与下式的磺酰脲反应将式G-SO 2 -NH-CO-Q-T的所形成的氨基甲酸酯转化为式(I)所示的磺酰脲。 还描述了上述式的新型磺酰基氨基甲酸酯作为中间体。