Tetrahydrofuran → 2-(4-(trifluoromethyl)benzyl)-7,8-dip-tolyl-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one

HRID 2101278ノート

反応式

HRID 2101278 の反応式
[F:1][C:2]([F:29])([F:28])[C:3]1[CH:27]=[CH:26][C:6]([CH2:7][N:8]2[C:24](=[O:25])[N:11]3[CH:12]=[CH:13][C:14]([C:17]4[CH:22]=[CH:21][C:20]([CH3:23])=[CH:19][CH:18]=4)=[C:15](Cl)[C:10]3=[N:9]2)=[CH:5][CH:4]=1.C1COCC1.[CH3:35][C:36]1[CH:41]=[CH:40][C:39](B(O)O)=[CH:38][CH:37]=1.C([O-])([O-])=O.[K+].[K+]>CO>[F:1][C:2]([F:29])([F:28])[C:3]1[CH:27]=[CH:26][C:6]([CH2:7][N:8]2[C:24](=[O:25])[N:11]3[CH:12]=[CH:13][C:14]([C:17]4[CH:22]=[CH:21][C:20]([CH3:23])=[CH:19][CH:18]=4)=[C:15]([C:39]4[CH:40]=[CH:41][C:36]([CH3:35])=[CH:37][CH:38]=4)[C:10]3=[N:9]2)=[CH:5][CH:4]=1

参加物

6

反応物 4

HCID 8028TetrahydrofuranHCID 11430Potassium CarbonateHCID 79799Tolylboronic acidHCID 577994432-(4-(trifluoromethyl)benzyl)-8-chloro-7-p-tolyl-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one

生成物 1

HCID 160921052-(4-(trifluoromethyl)benzyl)-7,8-dip-tolyl-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one収率 61.2%

試薬・触媒・溶媒 1

HCID 887Methanol溶媒

反応条件

温度
70 °C

実験手順

To a stirring solution of 2-(4-(trifluoromethyl)benzyl)-8-chloro-7-p-tolyl-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one (41.7 mg, 0.10 mmol) in a 1:1 mixture of THF and methanol (4 mL) at room temperature under argon was added 4-methylphenylboronic acid (40.8 g, 0.30 mmol), PXPd (16.2 g, 0.03 mmol), and K2CO3 (41 mg, 0.3 mmol). The resulting suspension was heated at 70° C. under argon for 10 min. Analysis by HPLC/MS indicated that starting material had been consumed. After cooling the reaction mixture to room temperature, water (25 mL) and EtOAc (25 mL) were added. The layers were separated. The organic layer was dried (Na2SO4), filtered, and concentrated under reduced pressure. The crude product was purified by automated silica gel chromatography (eluted with ethyl acetate-hexanes) to obtain 29 mg of the title compound as a white lyophilate. HPLC/MS: retention time=4.36 min, [M+H]+=474. 1H NMR (CDCl3): δ 7.78 (d, J=7.5 Hz, 1H), 7.59 (d, J=7.1 Hz, 2H), 7.50 (d, J=7.1 Hz, 2H), 7.18 (d, J=8.0 Hz, 2H), 7.09-7.00 (m, 6H), 6.65 (d, J=7.5 Hz, 1H), 5.22 (s, 2H), 2.32 (s, 3H), 2.31 (s, 3H).

後処理

  1. customhad been consumed
  2. temperatureAfter cooling the reaction mixture to room temperature
  3. additionwater (25 mL) and EtOAc (25 mL) were added
  4. customThe layers were separated
  5. dry with materialThe organic layer was dried (Na2SO4)
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customThe crude product was purified by automated silica gel chromatography (eluted with ethyl acetate-hexanes)

出典と根拠

ORDレコード
ord-d6a08dc7324249999b22babf644dc321
出典データセット
uspto-grants-2009_08
特許番号
US07572808B2

反応ノート

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