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Water → methyl 5-(1-((2-(trimethylsilyl)-ethoxy)methyl)-1H-pyrazol-4-yl)imidazo[1,2-c]pyrimidine-7-carboxylate

HRID 1852997
ノート
印刷プレビュー

反応式

HRID 1852997 の反応式
Cl[C:2]1[N:7]2[CH:8]=[CH:9][N:10]=[C:6]2[CH:5]=[C:4]([C:11]([O:13][CH3:14])=[O:12])[N:3]=1.CC1(C)C(C)(C)OB([C:23]2[CH:24]=[N:25][N:26]([CH2:28][O:29][CH2:30][CH2:31][Si:32]([CH3:35])([CH3:34])[CH3:33])[CH:27]=2)O1.[O-]P([O-])([O-])=O.[K+].[K+].[K+].CC(C1C=C(C(C)C)C(C2C=CC=CC=2P(C2CCCCC2)C2CCCCC2)=C(C(C)C)C=1)C.O>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].C(O)(C)C>[CH3:33][Si:32]([CH3:35])([CH3:34])[CH2:31][CH2:30][O:29][CH2:28][N:26]1[CH:27]=[C:23]([C:2]2[N:7]3[CH:8]=[CH:9][N:10]=[C:6]3[CH:5]=[C:4]([C:11]([O:13][CH3:14])=[O:12])[N:3]=2)[CH:24]=[N:25]1
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

8

反応物 5

HCID 962WaterHCID 62657Potassium Phosphate, TribasicHCID 111557942-Dicyclohexylphosphino-2',4',6'-triisoprophylbiphenylHCID 574776664-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazoleHCID 86685312Methyl 5-chloroimidazo[1,2-c]pyrimidine-7-carboxylate

生成物 1

HCID 67456583
methyl 5-(1-((2-(trimethylsilyl)-ethoxy)methyl)-1H-pyrazol-4-yl)imidazo[1,2-c]pyrimidine-7-carboxylate
収率 27.1%

試薬・触媒・溶媒 2

HCID 9811564Bis(dibenzylideneacetone)palladium触媒HCID 3776Isopropanol溶媒

反応条件

温度
80 °C

実験手順

Methyl 5-chloroimidazo[1,2-c]pyrimidine-7-carboxylate (1.00 g, 4.73 mmol), 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole (Preparation E; 1.53 g, 4.73 mmol), K3PO4 (2.01 g, 9.45 mmol), Pd2dba3 (0.433 g, 0.473 mmol), and XPHOS (0.563 g, 1.18 mmol) were combined dry. To this was added isopropanol (20 mL) and water (0.34 mL, 19 mmol). After de-gassing for 10 minutes, the flask was sealed and heated to 80° C. for 15 hours. The reaction mixture was diluted in EtOAc and undissolved solid was removed by filtration. The filtrate was concentrated down and purified by silica chromatography using 50-100% EtOAc/Hexanes gradient to afford methyl 5-(1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazol-4-yl)imidazo[1,2-c]pyrimidine-7-carboxylate (0.477 g, 1.28 mmol, 27.0% yield) as an orange brown solid. MS (apci) m/z=374.1 (M+H).

後処理

  1. customAfter de-gassing for 10 minutes
  2. customthe flask was sealed
  3. additionThe reaction mixture was diluted in EtOAc
  4. customundissolved solid was removed by filtration
  5. concentrationThe filtrate was concentrated down
  6. custompurified by silica chromatography

出典と根拠

ORDレコード
ord-0fb3849e255542a0815ee3ca1e6c8e7c
出典データセット
uspto-grants-2015_02
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08962596B2

反応ノート

読み込み中…

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