Pyridine → (Z)-2,2,2-trifluoro-N-(4-(N-(1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-6-yl)sulfamoyl)-3-((2-oxodihydrofuran-3(2H)-ylidene)methyl)phenyl)acetamide

HRID 1256161ノート

反応式

HRID 1256161 の反応式
[O:1]=[C:2]1[O:3][CH2:4][CH2:5]/[C:6]/1=[CH:7]/[C:8]1[CH:13]=[C:12]([NH:14][C:15](=[O:20])[C:16]([F:19])([F:18])[F:17])[CH:11]=[CH:10][C:9]=1[S:21](Cl)(=[O:23])=[O:22].[NH2:25][C:26]1[CH:27]=[CH:28][C:29]2[CH2:33][O:32][B:31]([OH:34])[C:30]=2[CH:35]=1.N1C=CC=CC=1>O=[N+]([O-])[O-].[O-][N+](=O)[O-].[O-][N+](=O)[O-].[O-][N+](=O)[O-].[O-][N+](=O)[O-].[O-][N+](=O)[O-].[Ce+4].[NH4+].[NH4+]>[F:17][C:16]([F:19])([F:18])[C:15]([NH:14][C:12]1[CH:11]=[CH:10][C:9]([S:21](=[O:23])(=[O:22])[NH:25][C:26]2[CH:27]=[CH:28][C:29]3[CH2:33][O:32][B:31]([OH:34])[C:30]=3[CH:35]=2)=[C:8](/[CH:7]=[C:6]2\[C:2](=[O:1])[O:3][CH2:4][CH2:5]\2)[CH:13]=1)=[O:20]

参加物

5

反応物 3

HCID 1049PyridineHCID 37701876-Aminobenzo(c)(1,2)oxaborol-1(3H)-olHCID 86655231(Z)-2-((2-oxodihydrofuran-3(2H)-ylidene)methyl)-4-(2,2,2-trifluoroacetamido)benzene-1-sulfonyl chloride

生成物 1

HCID 86655230(Z)-2,2,2-trifluoro-N-(4-(N-(1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-6-yl)sulfamoyl)-3-((2-oxodihydrofuran-3(2H)-ylidene)methyl)phenyl)acetamide収率 68.5%

試薬・触媒・溶媒 1

HCID 180504Ceric ammonium nitrate溶媒

実験手順

The crude intermediate (Z)-2-((2-oxodihydrofuran-3(2H)-ylidene)methyl)-4-(2,2,2-trifluoroacetamido)benzene-1-sulfonyl chloride (2.85 g, 10 mmol) and 6-aminobenzo[c][1,2]oxaborol-1(3H)-ol (1.5 g, 10 mmol) was suspended in CAN (50 ml), followed by the addition of pyridine (3 ml) dropwise. After stirred at rt for 3 hrs, the mixture was poured into ice-H2O and extracted with EtOAc, washed with H2O, brine, dried over MgSO4, filtered, concentrated in reduced pressure to dryness. The crude product was treated with DCM to give (Z)-2,2,2-trifluoro-N-(4-(N-(1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-6-yl)sulfamoyl)-3-((2-oxodihydrofuran-3(2H)-ylidene)methyl)phenyl)acetamide as a solid (3.4 g). 1H NMR (400 MHz, DMSO-d6) δ (ppm): 11.63 (s, 1H), 10.34 (s, 1H), 9.18 (s, 1H), 8.00 (d, J=8.4 Hz, 1H), 7.87 (s, 1H), 7.87 (dd, J=8.4, 1.6 Hz, 1H), 7.82 (t, J=2.8 Hz, 1H), 7.34 (d, J=1.6 Hz, 1H), 7.21 (d, J=8.4 Hz, 1H), 7.07 (dd, J=8.4, 1.6 Hz, 1H), 4.85 (s, 2H), 4.28 (t, J=7.2 Hz, 2H), 2.88 (dt, J=2.8, 7.2 Hz, 2H). MS (ESI) m/z=495 (M−1).

後処理

  1. extractionextracted with EtOAc
  2. washwashed with H2O, brine
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated in reduced pressure to dryness
  6. additionThe crude product was treated with DCM

出典と根拠

ORDレコード
ord-8cb9e1279734412f98ae6f979793fdfd
出典データセット
uspto-grants-2013_06
特許番号
US08461134B2

反応ノート

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