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【结 构 式】 
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【分子编号】64788 【品名】(2R)-2-(benzhydrylamino)propyl(2-pyridinyl)sulfamic acid 【CA登记号】 |
【 分 子 式 】C21H23N3O3S 【 分 子 量 】397.49804 【元素组成】C 63.45% H 5.83% N 10.57% O 12.08% S 8.07% |
合成路线1
该中间体在本合成路线中的序号：(X)The reaction of 5(S)-methyl-3-phenyl-4,5-dihydro-3H-1,2,3-oxathiazol (VIII) with benzhydrylamine (IX) gives the sulfamic acid (X), which is deprotected by hydrogenation with H2 over Pd/C to yield N-(2(R)-aminopropyl-N-(2-pyridyl)sulfamic acid (XI). The hydrolysis of (XI) with 3N HCl affords N1-(2-pyridyl)propane-1,2(R)-diamine (XII). The cyclization of the intermediate dimesylate (VI) with sulfamic acid (XI) or diamine (XII) by means of K2CO3 and NaI in hot DMF or refluxing acetonitrile provides the disubstituted piperazine (XIII) (1), which is finally condensed with 4-cyanobenzoyl chloride (XIV) by means of K2CO3 in ethyl acetate to give the target benzamide (1,2).
| 【1】 Kelly, M.G.; Childers, W.E.; Rosenzweig-Lipson, S.J. (Wyeth); Serotonergic agents. US 2002107254; US 6469007; WO 0244142 . |
| 【2】 Jirkovsky, I.; Zeldis, J.; Chan, A.W.-Y.; Fiegelson, G.B. (Wyeth); Preparation of N1-(2'-pyridyl)-1,2-propanediamine sulfamic acid and its use in the synthesis of biologically active piperazines. WO 0378396 . |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (VI) | 64786 | 2-(2,3-dihydro-1,4-benzodioxin-5-yl{2-[(methylsulfonyl)oxy]ethyl}amino)ethyl methanesulfonate | C14H21NO8S2 | 详情 | 详情 | |
| (VIII) | 64787 | (5S)-5-methyl-3-(2-pyridinyl)-1,2lambda~6~,3-oxathiazolidine-2,2-dione | C8H10N2O3S | 详情 | 详情 | |
| (IX) | 15149 | alpha-Aminodiphenylmethane; diphenylmethanamine; benzhydrylamine | 91-00-9 | C13H13N | 详情 | 详情 |
| (X) | 64788 | (2R)-2-(benzhydrylamino)propyl(2-pyridinyl)sulfamic acid | C21H23N3O3S | 详情 | 详情 | |
| (XI) | 64789 | (2R)-2-aminopropyl(2-pyridinyl)sulfamic acid | C8H13N3O3S | 详情 | 详情 | |
| (XII) | 64790 | N-[(2R)-2-aminopropyl]-N-(2-pyridinyl)amine; (2R)-N~1~-(2-pyridinyl)-1,2-propanediamine | C8H13N3 | 详情 | 详情 | |
| (XIII) | 64791 | N-{(2R)-2-[4-(2,3-dihydro-1,4-benzodioxin-5-yl)-1-piperazinyl]propyl}-2-pyridinamine; N-{(2R)-2-[4-(2,3-dihydro-1,4-benzodioxin-5-yl)-1-piperazinyl]propyl}-N-(2-pyridinyl)amine | C20H26N4O2 | 详情 | 详情 | |
| (XIV) | 19280 | 4-cyanobenzoyl chloride | 6068-72-0 | C8H4ClNO | 详情 | 详情 |