Cesium carbonate → Ethyl 1-(6-{2-[(4-bromobenzyl)oxy]phenyl}pyridin-2-yl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylate

HRID 1255162

反応式

HRID 1255162 の反応式
[OH:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[N:13]=[C:12]([N:14]2[C:18]([C:19]([F:22])([F:21])[F:20])=[C:17]([C:23]([O:25][CH2:26][CH3:27])=[O:24])[CH:16]=[N:15]2)[CH:11]=[CH:10][CH:9]=1.[Br:28][C:29]1[CH:36]=[CH:35][C:32]([CH2:33]Br)=[CH:31][CH:30]=1.C(=O)([O-])[O-].[Cs+].[Cs+].[NH4+].[Cl-]>CN(C=O)C>[Br:28][C:29]1[CH:36]=[CH:35][C:32]([CH2:33][O:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=2[C:8]2[N:13]=[C:12]([N:14]3[C:18]([C:19]([F:22])([F:21])[F:20])=[C:17]([C:23]([O:25][CH2:26][CH3:27])=[O:24])[CH:16]=[N:15]3)[CH:11]=[CH:10][CH:9]=2)=[CH:31][CH:30]=1

参加物

6

反応物 4

HCID 10796Cesium carbonateHCID 25517Ammonium ChlorideHCID 685274-Bromobenzyl bromideHCID 136298134Ethyl 1-[6-(2-hydroxylphenyl)pyridine-2-yl]-5-trifluoromethyl-1H-pyrazole-4-carboxylate

生成物 1

HCID 67159752Ethyl 1-(6-{2-[(4-bromobenzyl)oxy]phenyl}pyridin-2-yl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylate

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

To a solution of the title compound from Example 1 Step B (682 mg, 1.81 mmol) in DMF (10 mL) were added 4-bromobenzyl bromide (678 mg, 2.71 mmol) and cesium carbonate (1.77 g, 5.42 mmol). After 1.5 h, the reaction mixture was poured into sat. aq. NH4Cl and extracted with EtOAc. The organic phase was separated, dried over sodium sulfate, filtered, and concentrated in vacuo. Purification by flash chromatography on silica gel (0 to 25% EtOAc in hexanes, then 25 to 100% EtOAc in hexanes) provided the title compound: LCMS m/z 548.0 [M+H]+; 1H NMR (500 MHz, CDCl3) δ 8.13 (s, 1H), 8.08 (d, J=8.0 Hz, 1H), 7.95 (dd, J=7.5, 1.5 Hz, 1H), 7.88 (t, J=8.0 Hz, 1H), 7.54 (d, J=8.0 Hz, 1H), 7.48 (d, J=8.0 Hz, 2H), 7.39-7.36 (m, 1H), 7.23 (d, J=8.0 Hz, 2H), 7.12 (t, J=7.5 Hz, 1H), 7.03 (d, J=7.5 Hz, 1H), 5.10 (s, 2H), 4.39 (q, J=7.0 Hz, 2H), 1.39 (t, J=7.0 Hz, 3H).

後処理

  1. extractionextracted with EtOAc
  2. customThe organic phase was separated
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customPurification by flash chromatography on silica gel (0 to 25% EtOAc in hexanes

出典と根拠

ORDレコード
ord-c5bf0cddcda54265b0984b03cc8637df
出典データセット
uspto-grants-2013_06
特許番号
US08455638B2

関連ノート

読み込み中…