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【结 构 式】 
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【分子编号】47651 【品名】2-(2,4-difluorophenyl)-1-(ethylsulfonyl)-1,1-difluoro-3-(1H-1,2,4-triazol-1-yl)-2-propanol 【CA登记号】 |
【 分 子 式 】C13H13F4N3O3S 【 分 子 量 】367.3242528 【元素组成】C 42.51% H 3.57% F 20.69% N 11.44% O 13.07% S 8.73% |
合成路线1
该中间体在本合成路线中的序号：(X)The acylation of m-difluorobenzene (I) with 2-bromoacetyl bromide (II) by means of AlCl3 gives the phenacyl bromide (III), which is treated with ethylmercaptan (IV) and K2CO3 to yield the sulfanyl derivative (V). The fluorination of (V) with N-fluoro-4-methylpyridinium-2-sulfonate affords the difluoroacetyl derivative (VI). The methylenation of the carbonyl group of (VI) with trimethylsulfoxonium iodide provides the oxiranyl derivative (VII), which is opened with 1,2,4-triazole (VIII) and K2CO3, furnishing the propanol derivative (IX). The oxidation of the sulfanyl group of (IX) by means of H2O2 or MCPBA gives the corresponding sulfonyl derivative (X). Finally, the racemic mixture (X) is submitted to optical resolution by crystallization of the (+)-3-bromocamphorsulfonic acid. Alternatively, intermediate (VI) can be obtained as follows: The reaction of 2-chloro-2,2-difluoroacetic acid ethyl ester (XI) with ethylmercaptan (IV) by means of NaH gives the sulfanyl derivative (XII), which is finally condensed with 2,4-difluorobromobenzene (XIII) by means of BuLi to afford the desired intermediate (VI).
| 【1】 Kaneko, Y.; Takeda, S.; Eto, H.; et al.; New antifungal 1,2,4-triazoles with difluoro(substituted sulfonyl)methyl moiety. Chem Pharm Bull 2001, 49, 2, 173. |
| 【2】 Sato, S.; Kaneko, Y.; Takeda, S.; Eto, H.; Tokizawa, M.; SS750, a new triazole agent: Structure-activity relationship of novel triazole-containing gem-difluoromethylsulfonyl moiety. 40th Intersci Conf Antimicrob Agents Chemother (Sept 17 2000, Toronto) 2000, Abst F-1080. |
| 【3】 Matsumoto, M.; Kaneko, Y.; Maebashi, K.; Takeda, S.; Sato, S.; Tokizawa, M.; Ishida, K.; Eto, H.; Asaoka, T. (SSP Co., Ltd.); Triazole deriv. or salt thereof, preparation process thereof as well as pharmaceutical containing said cpd.. CA 2256060; EP 0927719; JP 1999240871; US 6083968 . |
| 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) | 13095 | m-Difluorobenzene; 1,3-Difluorobenzene | 372-18-9 | C6H4F2 | 详情 | 详情 |
| (II) | 14005 | 2-Bromoacetyl bromide; Bromoacetyl bromide | 598-21-0 | C2H2Br2O | 详情 | 详情 |
| (III) | 47646 | 2-bromo-1-(2,4-difluorophenyl)-1-ethanone | C8H5BrF2O | 详情 | 详情 | |
| (IV) | 23712 | 1-ethanethiol; ethylhydrosulfide | 75-08-1 | C2H6S | 详情 | 详情 |
| (V) | 47647 | 1-(2,4-difluorophenyl)-2-(ethylsulfanyl)-1-ethanone | C10H10F2OS | 详情 | 详情 | |
| (VI) | 47648 | 1-(2,4-difluorophenyl)-2-(ethylsulfanyl)-2,2-difluoro-1-ethanone | C10H8F4OS | 详情 | 详情 | |
| (VII) | 47649 | 2-(2,4-difluorophenyl)-2-[(ethylsulfanyl)(difluoro)methyl]oxirane; [2-(2,4-difluorophenyl)-2-oxiranyl](difluoro)methyl ethyl sulfide | C11H10F4OS | 详情 | 详情 | |
| (VIII) | 13135 | 1H-1,2,4-Triazole; 1,2,4-Triazole | 288-88-0 | C2H3N3 | 详情 | 详情 |
| (IX) | 47650 | 2-(2,4-difluorophenyl)-1-(ethylsulfanyl)-1,1-difluoro-3-(1H-1,2,4-triazol-1-yl)-2-propanol | C13H13F4N3OS | 详情 | 详情 | |
| (X) | 47651 | 2-(2,4-difluorophenyl)-1-(ethylsulfonyl)-1,1-difluoro-3-(1H-1,2,4-triazol-1-yl)-2-propanol | C13H13F4N3O3S | 详情 | 详情 | |
| (XI) | 47652 | Chlorodifluoroacetic acid ethyl ester; Difluorochloroacetic acid ethyl ester; Ethyl chlorodifluoroacetate; ethyl 2-chloro-2,2-difluoroacetate | 383-62-0 | C4H5ClF2O2 | 详情 | 详情 |
| (XII) | 47653 | ethyl 2-(ethylsulfanyl)-2,2-difluoroacetate | C6H10F2O2S | 详情 | 详情 | |
| (XIII) | 15488 | 1-bromo-2,4-difluorobenzene | 348-57-2 | C6H3BrF2 | 详情 | 详情 |