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Potassium Phosphate, Tribasic → 2-Methyl-8-(4-p-tolylpyridin-2-yl)benzofuro[2,3-b]pyridine

HRID 1844928
ノート
印刷プレビュー

反応式

HRID 1844928 の反応式
[CH3:1][C:2]1[N:7]=[C:6]2[O:8][C:9]3[C:14](B4OC(C)(C)C(C)(C)O4)=[CH:13][CH:12]=[CH:11][C:10]=3[C:5]2=[CH:4][CH:3]=1.Cl[C:25]1[CH:30]=[C:29]([C:31]2[CH:36]=[CH:35][C:34]([CH3:37])=[CH:33][CH:32]=2)[CH:28]=[CH:27][N:26]=1.C1(P(C2CCCCC2)C2C=CC=CC=2C2C(OC)=CC=CC=2OC)CCCCC1.P([O-])([O-])([O-])=O.[K+].[K+].[K+]>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].O.C1(C)C=CC=CC=1>[CH3:1][C:2]1[N:7]=[C:6]2[O:8][C:9]3[C:14]([C:25]4[CH:30]=[C:29]([C:31]5[CH:36]=[CH:35][C:34]([CH3:37])=[CH:33][CH:32]=5)[CH:28]=[CH:27][N:26]=4)=[CH:13][CH:12]=[CH:11][C:10]=3[C:5]2=[CH:4][CH:3]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

8

反応物 4

HCID 62657Potassium Phosphate, TribasicHCID 112698722-Dicyclohexylphosphino-2',6'-dimethoxybiphenylHCID 446052162-Chloro-4-(4-methylphenyl)pyridineHCID 901214882-Methyl-8-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzofuro[2,3-b]pyridine

生成物 1

HCID 901215702-Methyl-8-(4-p-tolylpyridin-2-yl)benzofuro[2,3-b]pyridine収率 71.1%

試薬・触媒・溶媒 3

HCID 9811564Bis(dibenzylideneacetone)palladium触媒HCID 962Water溶媒HCID 1140Toluene溶媒

実験手順

A mixture of 2-methyl-8-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzofuro[2,3-b]pyridine (2.5 g, 8.03 mmol), 2-chloro-4-(p-tolyl)pyridine (1.80 g, 8.83 mmol), Pd2(dba)3 (0.147 g 0.161 mmol), dicyclohexyl(2′,6′-dimethoxy-[1,1′-biphenyl]-2-yl)phosphine (0.264 g, 0.642 mmol), potassium phosphate (5.96 g, 28.1 mmol), toluene (100 mL) and water (10 mL) was degassed with nitrogen and then refluxed overnight. The mixture was concentrated and extracted with ethyl acetate. The ethyl acetate layer was dried on Na2SO4 and then further purified by column chromatography using ethyl acetate in hexanes and washed with methanol to give 2-methyl-8-(4-(p-tolyl)pyridin-2-yl)benzofuro[2,3-b]pyridine (2.0 g, 5.71 mmol, 71% yield).

後処理

  1. customwas degassed with nitrogen
  2. temperaturerefluxed overnight
  3. concentrationThe mixture was concentrated
  4. extractionextracted with ethyl acetate
  5. dry with materialThe ethyl acetate layer was dried on Na2SO4
  6. customfurther purified by column chromatography
  7. washwashed with methanol

出典と根拠

ORDレコード
ord-f46434f9262744debd3cf905dc215234
出典データセット
uspto-grants-2015_02
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08946697B1

反応ノート

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