【结 构 式】 |
【分子编号】63211 【品名】5-chloro-2-(1H-1,2,3,4-tetraazol-1-yl)benzonitrile 【CA登记号】 |
【 分 子 式 】C8H4ClN5 【 分 子 量 】205.60616 【元素组成】C 46.73% H 1.96% Cl 17.24% N 34.06% |
与该中间体有关的原料药合成路线共 1 条
合成路线1
该中间体在本合成路线中的序号:(IV)The precursor 5-chloro-2-tetrazol-1-yl-benzylamine (V) is prepared as follows. Cyclization of 5-chloroanthranilic acid (I) with sodium azide and trimethyl orthoformate gives rise to the tetrazole derivative (II). Subsequent coupling of acid (II) with ammonium chloride in the presence of EDC and HOAt affords amide (III). This is then dehydrated to the nitrile (IV) employing the Burgess reagent in THF. Nitrile (IV) is reduced to the target amine (V) by catalytic hydrogenation over Raney nickel.
【1】 Williams, P.D.; Selnick, H.G.; Young, M.B.; Nantermet, P.G. (Merck & Co., Inc.); Thrombin inhibitors. EP 1359913; WO 0264140 . |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(I) | 10285 | 2-Amino-5-chlorobenzoic acid | 635-21-2 | C7H6ClNO2 | 详情 | 详情 |
(II) | 63209 | 5-chloro-2-(1H-1,2,3,4-tetraazol-1-yl)benzoic acid | C8H5ClN4O2 | 详情 | 详情 | |
(III) | 63210 | 5-chloro-2-(1H-1,2,3,4-tetraazol-1-yl)benzamide | C8H6ClN5O | 详情 | 详情 | |
(IV) | 63211 | 5-chloro-2-(1H-1,2,3,4-tetraazol-1-yl)benzonitrile | C8H4ClN5 | 详情 | 详情 | |
(V) | 63212 | [5-chloro-2-(1H-1,2,3,4-tetraazol-1-yl)phenyl]methanamine; 5-chloro-2-(1H-1,2,3,4-tetraazol-1-yl)benzylamine | C8H8ClN5 | 详情 | 详情 |
Extended Information