中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
1-苄基-3-(氯甲基)-1H-吲唑 | 1-benzyl-3-(chloromethyl)-1H-indazole | 131427-22-0 | C15H13ClN2 | 256.735 |
1-苄基-3-羟基甲基-1H-吲唑 | (1-Benzyl-1H-indazol-3-yl)-methanol | 131427-21-9 | C15H14N2O | 238.289 |
宾达利 | bindarit | 130641-38-2 | C19H20N2O3 | 324.379 |
A mechanically-activated chemoselective Heck coupling for the synthesis of 3-vinylindazoles has been developed with the aid of catalytic amounts of TBAB and NaBr as both dehalogenation restrainer and grinding auxiliary. After tuning of the chemical conditions and mechanical parameters, a series of non-activated 3-bromoindazoles and a broad scope of olefins worked well to give the corresponding coupling products in good to excellent yields. A further application of this protocol was performed in a two-step mechanochemical Heck/Migita cross coupling, which provided a highly efficient route for the synthesis of axitinib.