Tributylphosphine → 1-(2-Cyclopropyl-3-methylimidazo[1,2-a]pyridin-6-yl)-4-((5-(trifluoromethyl)thiophen-2-yl)methoxy)pyridin-2(1H)-one

HRID 2202977ノート

反応式

HRID 2202977 の反応式
[CH:1]1([C:4]2[N:5]=[C:6]3[CH:11]=[CH:10][C:9]([N:12]4[CH:17]=[CH:16][C:15]([OH:18])=[CH:14][C:13]4=[O:19])=[CH:8][N:7]3[C:20]=2[CH3:21])[CH2:3][CH2:2]1.[F:22][C:23]([F:32])([F:31])[C:24]1[S:28][C:27]([CH2:29]O)=[CH:26][CH:25]=1.C(P(CCCC)CCCC)CCC.N(C(N1CCCCC1)=O)=NC(N1CCCCC1)=O>C1COCC1.O>[CH:1]1([C:4]2[N:5]=[C:6]3[CH:11]=[CH:10][C:9]([N:12]4[CH:17]=[CH:16][C:15]([O:18][CH2:29][C:27]5[S:28][C:24]([C:23]([F:32])([F:31])[F:22])=[CH:25][CH:26]=5)=[CH:14][C:13]4=[O:19])=[CH:8][N:7]3[C:20]=2[CH3:21])[CH2:3][CH2:2]1

参加物

7

反応物 4

HCID 13831TributylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 539255405-(Trifluoromethyl)-2-thiophenemethanolHCID 896902811-(2-Cyclopropyl-3-methylimidazo[1,2-a]pyridin-6-yl)-4-hydroxypyridin-2(1H)-one

生成物 1

HCID 896902751-(2-Cyclopropyl-3-methylimidazo[1,2-a]pyridin-6-yl)-4-((5-(trifluoromethyl)thiophen-2-yl)methoxy)pyridin-2(1H)-one収率 20.2%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

To a solution of 1-(2-cyclopropyl-3-methylimidazo[1,2-a]pyridin-6-yl)-4-hydroxypyridin-2(1H)-one (100 mg), (5-(trifluoromethyl)thiophen-2-yl)methanol (130 mg) and tributylphosphine (0.27 ml) in THF (10 ml) was added 1,1′-(azodicarbonyl)dipiperidine (269 mg) at 60° C., and the mixture was heated at the same temperature for 2 h. The mixture was poured into water, and extracted with EtOAc. The extract was washed with brine, dried over MgSO4, concentrated, and purified by NH silica gel column chromatography (hexane/EtOAc), followed by silica gel column chromatography (EtOAc/MeOH). The resulting solid was purified by preparative HPLC (C18, mobile phase: H2O/CH3CN (0.1% TFA included)). The desired fraction was neutralized with saturated NaHCO3 solution, and extracted with EtOAc. The organic layer was separated, dried over MgSO4 and concentrated in vacuo to give the title compound (32.0 mg) as a white solid.

後処理

  1. temperaturethe mixture was heated at the same temperature for 2 h
  2. extractionextracted with EtOAc
  3. washThe extract was washed with brine
  4. dry with materialdried over MgSO4
  5. concentrationconcentrated
  6. custompurified by NH silica gel column chromatography (hexane/EtOAc)
  7. customThe resulting solid was purified by preparative HPLC (C18, mobile phase: H2O/CH3CN (0.1% TFA included))
  8. extractionextracted with EtOAc
  9. customThe organic layer was separated
  10. dry with materialdried over MgSO4
  11. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-245ed905a39c42f09cd6f4a74b39a139
出典データセット
uspto-grants-2016_06
特許番号
US09365540B2

反応ノート

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