【结 构 式】 |
【分子编号】50865 【品名】3-(6-fluoro-1,2-benzisoxazol-3-yl)-5-iodopentyl methanesulfonate 【CA登记号】 |
【 分 子 式 】C13H15FINO4S 【 分 子 量 】427.2353132 【元素组成】C 36.55% H 3.54% F 4.45% I 29.7% N 3.28% O 14.98% S 7.51% |
合成路线1
该中间体在本合成路线中的序号:(XI)The condensation of tetrahydropyran-4-carbonyl chloride (V) with refluxing 1,3-difluorobenzene (VI) by means of AlCl3 gives 1-(2,4-difluorophenyl)-1-(tetrahydropyran-4-yl)methanone (VII), which is treated with hydroxylamine hydrochloride and sodium acetate in refluxing ethanol/water to yield the corresponding oxime (VIII). The cyclization of (VIII) by means of KOH in refluxing methanol affords 6-fluoro-3-(tetrahydropyran-4-yl)-1,2-benzisoxazole (IX), which is treated with NaI and Ac-Cl and then with K2CO3 in refluxing acetonitrile to provide the 5-iodopentanol derivative (X). The reaction of the OH group of (X) with Ms-Cl and TEA in dichloromethane gives the corresponding mesylate (XI), which is finally cyclized with the intermediate amine (IV) by means of NaHCO3 in refluxing acetonitrile to yield the target piperidine.
【1】 Huguet-Clotet, J.; Marquillas Olondriz, F.; Caldero Ges, J.M.; Del Castillo Nieto, J.C.; Dalmases Barjoan, P.; Bosch Rovira, A. (Vita-Invest, SA); Process for obtaining 3-2-[4-(6-fluoro-benzo[d]isoxazol-3-yl)-piperidin-1-yl]-ethyl-2-methyl-6,7,8,9-tetrahydro-4H-pyrido-[1,2-a]pyrimidine-4-one. ES 2074966 . |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(IV) | 50859 | 3-(2-aminoethyl)-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one | C11H17N3O | 详情 | 详情 | |
(V) | 50860 | tetrahydro-2H-pyran-4-carbonyl chloride | 40191-32-0 | C6H9ClO2 | 详情 | 详情 |
(VI) | 13095 | m-Difluorobenzene; 1,3-Difluorobenzene | 372-18-9 | C6H4F2 | 详情 | 详情 |
(VII) | 50861 | (2,4-difluorophenyl)(tetrahydro-2H-pyran-4-yl)methanone | C12H12F2O2 | 详情 | 详情 | |
(VIII) | 50862 | (2,4-difluorophenyl)(tetrahydro-2H-pyran-4-yl)methanone oxime | C12H13F2NO2 | 详情 | 详情 | |
(IX) | 50863 | 6-fluoro-3-tetrahydro-2H-pyran-4-yl-1,2-benzisoxazole | C12H12FNO2 | 详情 | 详情 | |
(X) | 50864 | 3-(6-fluoro-1,2-benzisoxazol-3-yl)-5-iodo-1-pentanol | C12H13FINO2 | 详情 | 详情 | |
(XI) | 50865 | 3-(6-fluoro-1,2-benzisoxazol-3-yl)-5-iodopentyl methanesulfonate | C13H15FINO4S | 详情 | 详情 |