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【结 构 式】

【分子编号】46681

【品名】2-methoxy-5-nitrophenylformamide

【CA登记号】

【 分 子 式 】C8H8N2O4

【 分 子 量 】196.1626

【元素组成】C 48.98% H 4.11% N 14.28% O 32.62%

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:(III)

Formylation of 2-methoxy-5-nitroaniline (I) with formic acid (II) in Ac2O/THF yields formamide (III), whose nitro group is then hydrogenated over Pd/C in MeOH to provide aniline (IV). Treatment of (IV) with pentafluorophenylsulfonyl chloride (V) in acetone in the presence of 2,6-lutidine affords sulfonamide (VI), which is then deformylated to hydrochloride (VII) by treatment with acetyl chloride and HCl in EtOH. The target compound is finally obtained by reaction of (VII) with potassium cyanate (KCNO) in H2O/HOAc. An analogous route can be also followed for the synthesis of the target product: Treatment of 3-nitro-4-fluoroaniline (VIII) with sodium methoxide (NaOMe) in refluxing MeOH furnishes 4-methoxy-3-nitroaniline (IX), which is then condensed with pentafluorophenylsulfonyl chloride (V) in MeOH to give sulfonamide (X). Reduction of the nitro moiety of (X) by hydrogenation over Pd/C in EtOH yields aniline (XI), which is finally treated with potassium cyanate (KCNO) in H2O/HOAc.

1 Houze, J.; Medina, J.; Gergely, J.; et al.; T900607: Design and evaluation of a second-generation irreversible binder of beta-tubulin. Clin Cancer Res 2000, 6, Suppl., Abst 562.
2 Houze, J.B. (Tularik Inc.); Arylsulfonanilide ureas. EP 1115701; US 6214880; WO 0017159 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(VII), (XI) 46684 N-(3-amino-4-methoxyphenyl)-2,3,4,5,6-pentafluorobenzenesulfonamide C13H9F5N2O3S 详情 详情
(I) 46680 2-methoxy-5-nitrophenylamine; 2-methoxy-5-nitroaniline 99-59-2 C7H8N2O3 详情 详情
(II) 14590 Formic acid 64-18-6 CH2O2 详情 详情
(III) 46681 2-methoxy-5-nitrophenylformamide C8H8N2O4 详情 详情
(IV) 46682 5-amino-2-methoxyphenylformamide C8H10N2O2 详情 详情
(V) 20482 2,3,4,5,6-pentafluorobenzenesulfonyl chloride 832-53-1 C6ClF5O2S 详情 详情
(VI) 46683 2,3,4,5,6-pentafluoro-N-[3-(formylamino)-4-methoxyphenyl]benzenesulfonamide C14H9F5N2O4S 详情 详情
(VIII) 24710 4-fluoro-3-nitroaniline 364-76-1 C6H5FN2O2 详情 详情
(IX) 46685 4-methoxy-3-nitroaniline; 4-methoxy-3-nitrophenylamine C7H8N2O3 详情 详情
(X) 46686 2,3,4,5,6-pentafluoro-N-(4-methoxy-3-nitrophenyl)benzenesulfonamide C13H7F5N2O5S 详情 详情
Extended Information