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    • 8. 发明公开
    • PROCESS AND INTERMEDIATES FOR THE SYNTHESIS OF (3-ALKYL-5-PIPERIDIN-1-YL-3,3A-DIHYDRO- PYRAZOLOÝ1,5-A¨PYRIMIDIN-7-YL)-AMINO DERIVATIVES AND INTERMEDIATES
    • VERFAHREN UND ZWISCHENPRODUKTE ZUR HERSTELLUNG VON(3-ALKYL-5-PIPERIDIN-1-YL-3,3A-二氢吡唑并[1,5-A]吡啶基-7-YL) - 氨基衍生物
    • EP2057166A2
    • 2009-05-13
    • EP07837015.2
    • 2007-08-17
    • Schering Corporation
    • CHEN, Frank XingKEERTIKAR, Kartik M.KUO, Shen-ChunLEE, Hong-ChangRAGHAVAN, Ramani R.WU, George G.XIE, Ji
    • C07D487/04
    • C07D487/04
    • Disclosed is a process for the synthesis of compounds of Formula I by sequentially aminating, first with a primary amine and then with a secondary amine, an intermediate compound of the structure of Formula E1, wherein R1 is a linear, branched, or cyclic alkyloxy functional group of the structure (—R2a—OH), R2a is a linear, branched or cyclic alkyl group, R2 is a linear, branched or cyclic alkyl group, and R3 is an alkylene-heterocycle, said process comprising forming intermediate compound of Formula E1 by reacting, in a refluxing reaction solvent selected from alcohols having 5 or less carbon atoms and mixtures of two or more thereof, a methanol solution of a salt of a 4-alkyl-3-amino-pyrazole compound of Formula C1, with a diamidization reagent selected from dimethylmalonate, monomethylmalonyl-chloride, and malonyl dichloride in the presence of a Lewis base having sufficient proton affinity to abstract a proton from the 1-position nitrogen on the pyrazole ring.
    • 公开了一种合成式I化合物的方法,首先用伯胺,然后与仲胺,式E1结构的中间体化合物,其中R 1是直链,支链或环状烷氧基官能团 (-R2a-OH)基团,R2a是直链,支链或环状的烷基,R2是直链,支链或环状的烷基,R3是亚烷基 - 杂环,所述方法包括形成式E1的中间体化合物 通过使选自具有5个或更少碳原子的醇的回流反应溶剂及其两种或更多种的混合物,将式C1的4-烷基-3-氨基 - 吡唑化合物的盐与二酰胺化反应 选自二甲基丙二酸二甲酯,单甲基丙二酸酰氯和丙二酰氯的试剂在具有足够质子亲和力的路易斯碱存在下从吡唑环上的1-位氮抽出质子。