会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明申请
    • METHODS FOR STABILIZING LITHIATED HALOGEN-SUBSTITUTED AROMATIC COMPOUNDS
    • 用于稳定取代的取代的芳族化合物的方法
    • WO2009056487A1
    • 2009-05-07
    • PCT/EP2008/064403
    • 2008-10-23
    • F. HOFFMANN-LA ROCHE AGJI, YaohuiRAWALPALLY, Thimma
    • JI, YaohuiRAWALPALLY, Thimma
    • C07C45/00C07C47/575C07C47/55C07F1/02
    • C07C45/00C07C47/55C07C47/575
    • The present invention provides novel methods for stabilizing lithiated halogen-substituted aromatic compounds. In particular, the method is useful for the preparation of 2-methoxy-5, 6-difluorobenzaldehyde, an important intermediate for the preparation of [4-amino-2-(1-methanesuifonyrpiperidin-4-ylamino) pyrimidin-5-yl](2,3-difluoro- 6methoxyphenyl)methanone, a potent and selective inhibitor of CDK4/Cyclin D1, CDK2/Cyclin E and CDK1/Cyclin B. The method is also useful for stabilizing other lithiated halogen-substituted aromatic compounds and is particularly useful for scale up reactions where the exothermic nature of the reaction can lead to reaction runway. The reaction runaway hazard can be eliminated by using anhydrous MgCl 2 as an additive to complex with and stabilize the reactive species and slow down the rate of decomposition.
    • 本发明提供了稳定锂化卤素取代的芳族化合物的新方法。 特别地,该方法可用于制备2-甲氧基-5,6-二氟苯甲醛,其是制备[4-氨基-2-(1-甲基异烟酰基哌啶-4-基氨基)嘧啶-5-基] (2,3-二氟-6-甲氧基苯基)甲酮,一种有效和选择性的CDK4 /细胞周期蛋白D1,CDK2 /细胞周期蛋白E和CDK1 /细胞周期蛋白B抑制剂。该方法也可用于稳定其他锂化卤素取代的芳族化合物,特别有用 用于放大反应,其中反应的放热性质可导致反应跑道。 通过使用无水MgCl 2作为与活性物质复合并稳定反应性物质的添加剂可以消除反应失控危险,并降低分解速率。