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Ethyl isocyanate → 4-Amino-2-(3-ethylureido)-N-(1-hydroxy-1,3-dihydrobenzo[c][1, 2]oxaborol-6-yl)benzenesulfonamide

HRID 1256178
ノート
印刷プレビュー

反応式

HRID 1256178 の反応式
[NH2:1][C:2]1[CH:7]=[C:6]([NH2:8])[CH:5]=[CH:4][C:3]=1[S:9]([NH:12][C:13]1[CH:14]=[CH:15][C:16]2[CH2:20][O:19][B:18]([OH:21])[C:17]=2[CH:22]=1)(=[O:11])=[O:10].[N:23]([CH2:26][CH3:27])=[C:24]=[O:25]>CN(C=O)C.C(OCC)(=O)C>[NH2:8][C:6]1[CH:5]=[CH:4][C:3]([S:9]([NH:12][C:13]2[CH:14]=[CH:15][C:16]3[CH2:20][O:19][B:18]([OH:21])[C:17]=3[CH:22]=2)(=[O:10])=[O:11])=[C:2]([NH:1][C:24]([NH:23][CH2:26][CH3:27])=[O:25])[CH:7]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 2

HCID 8022Ethyl isocyanateHCID 671737422,4-diamino-N-(1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-6-yl)benzenesulfonamide

生成物 1

HCID 673124054-Amino-2-(3-ethylureido)-N-(1-hydroxy-1,3-dihydrobenzo[c][1, 2]oxaborol-6-yl)benzenesulfonamide収率 24.6%

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide溶媒HCID 8857Ethyl Acetate
溶媒

実験手順

To a solution of 2,4-diamino-N-(1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-6-yl)benzenesulfonamide (1.0 g, 3.13 mmol) in DMF (15 ml) was added isocyanatoethane (0.5 g, 7.0 mmol) dropwise at room temperature. The reaction mixture was stirred at room temperature overnight, diluted with ethyl acetate and washed with H2O, brine. The organic fraction was then dried (MgSO4) and concentrated in vacuo. The residue was purified by Prep-HPLC to give the title compound as a white powder (0.3 g). 1H NMR (400 MHz, DMSO-d6) δ ppm 9.87 (s, 1H), 9.17 (s, 1H), 7.99 (s, 1H), 7.43 (d, J=1.6 Hz, 1H), 7.34 (d, J=2.0 Hz, 1H), 7.31 (d, J=8.4 Hz, 1H), 7.24 (d, J=8.0 Hz, 1H), 7.12 (dd, J=2.0, 8.4 Hz, 1H), 7.02 (t, J=5.2 Hz, 1H), 6.08 (dd, J=2.0, 8.4 Hz, 1H), 5.88 (s, 2H), 4.87 (s, 2H), 3.04˜3.11 (m, 2H), 1.07 (t, J=7.2 Hz, 3H); MS (ESI) m/z=389 (M−1, negative); HPLC purity: 93.6% (MaxPlot 200-400 nm), 90.3% (220 nm).

後処理

  1. washwashed with H2O, brine
  2. dry with materialThe organic fraction was then dried (MgSO4)
  3. concentrationconcentrated in vacuo
  4. customThe residue was purified by Prep-HPLC

出典と根拠

ORDレコード
ord-2d30f9293bc54d8c9f56c0963618fa40
出典データセット
uspto-grants-2013_06
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08461134B2

反応ノート

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