Methylamine → 6-(4-Bromo-2-chloro-phenylamino)-7-fluoro-3H-benzoimidazole-5-carboxylic acid methylamide

HRID 32008

反応式

HRID 32008 の反応式
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9]2[C:10]([C:20]([OH:22])=O)=[CH:11][C:12]3[N:16](C)[CH:15]=[N:14][C:13]=3[C:18]=2[F:19])=[C:4]([Cl:23])[CH:3]=1.C1C=CC2N(O)N=[N:30][C:28]=2C=1.C(N(CC)CC)C.CN.CCN=C=NCCCN(C)C>CN(C)C=O.C(OCC)(=O)C.O>[CH3:28][NH:30][C:20]([C:10]1[C:9]([NH:8][C:5]2[CH:6]=[CH:7][C:2]([Br:1])=[CH:3][C:4]=2[Cl:23])=[C:18]([F:19])[C:13]2[N:14]=[CH:15][NH:16][C:12]=2[CH:11]=1)=[O:22]

参加物

9

反応物 5

HCID 6329MethylamineHCID 8471TriethylamineHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 16092137AZ-133266637

生成物 1

HCID 113954076-(4-Bromo-2-chloro-phenylamino)-7-fluoro-3H-benzoimidazole-5-carboxylic acid methylamide収率 43%

試薬・触媒・溶媒 3

HCID 962Water溶媒HCID 6228Dimethylformamide溶媒HCID 8857Ethyl Acetate溶媒

実験手順

6-(4-Bromo-2-chloro-phenylamino)-7-fluoro-3H-benzoimidazole-5-carboxylic acid 10c (0.029 g, 0.076 mmol) is dissolved in N,N-dimethylformamide (1.1 mL). HOBT (0.016 g, 0.10 mmol), triethylamine (0.028 mL, 0.20 mmol), methylamine (0.059 mL, 0.12 mmol, 2 M solution in tetrahydrofuran), and EDCI (0.019 g, 0.10 mmol) are added consecutively to the reaction mixture at room temperature. The solution is stirred at room temperature for 16 hours under N2. The reaction mixture is poured into a separatory funnel and diluted with ethyl acetate and water and the layers separated. The ethyl acetate layer is washed successively with aqueous saturated NH4Cl (2×), brine (1×), aqueous saturated sodium bicarbonate (2×), water (1×), and brine (1×), dried (MgSO4) and concentrated under reduced pressure. The resulting solid is purified by FCC (eluting with 19:1 methylene chloride:methanol) to yield 0.013 g (42%) of the pure desired product. MS APCI (+) m/z 397, 399 (M+, Br pattern) detected; 1H NMR (400 MHz, DMSO-d6) δ 8.76 (broad s, 1H), 8.69 (m, 1H), 8.41 (s, 1H), 7.76 (s, 1H), 7.63 (d, 1H), 7.30 (dd, 1H), 6.50 (dd, 1H), 2.76 and 2.75 (s and s, 3H total, amide rotamers). 19F NMR (376 MHz, DMSO-d6) −132.69 (s).

後処理

  1. additionThe reaction mixture is poured into a separatory funnel
  2. customthe layers separated
  3. washThe ethyl acetate layer is washed successively with aqueous saturated NH4Cl (2×), brine (1×), aqueous saturated sodium bicarbonate (2×), water (1×), and brine (1×)
  4. dry with materialdried (MgSO4)
  5. concentrationconcentrated under reduced pressure
  6. customThe resulting solid is purified by FCC (eluting with 19:1 methylene chloride:methanol)

出典と根拠

ORDレコード
ord-44534d4dc1a74527af0d462e02cad7f2
出典データセット
uspto-grants-2008_09
特許番号
US07425637B2

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