Potassium Phosphate, Tribasic → 8-(4-(3-Isopropylphenyl)pyridine-2-yl)-2-methylbenzofuro[2,3-b]pyridine

HRID 1844920ノート

反応式

HRID 1844920 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][CH:34]=[C:33]([CH:37]([CH3:39])[CH3:38])[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>[CH:37]([C:33]1[CH:32]=[C:31]([C:29]2[CH:30]=[CH:25][N:26]=[C:27]([C:14]3[C:9]4[O:8][C:6]5[C:5]([C:10]=4[CH:11]=[CH:12][CH:13]=3)=[CH:4][CH:3]=[C:2]([CH3:1])[N:7]=5)[CH:28]=2)[CH:36]=[CH:35][CH:34]=1)([CH3:39])[CH3:38]

参加物

8

反応物 4

HCID 62657Potassium Phosphate, TribasicHCID 112698722-Dicyclohexylphosphino-2',6'-dimethoxybiphenylHCID 901214882-Methyl-8-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzofuro[2,3-b]pyridineHCID 901215252-Chloro-4-(3-isopropylphenyl)pyridine

生成物 1

HCID 901214988-(4-(3-Isopropylphenyl)pyridine-2-yl)-2-methylbenzofuro[2,3-b]pyridine収率 57%

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 (3.15 g, 10.2 mmol), 2-chloro-4-(3-isopropylphenyl)pyridine (2.60 g, 11.2 mmol), Pd2(dba)3 (0.187 g 0.204 mmol), dicyclohexyl(2′,6′-dimethoxy-[1,1′-biphenyl]-2-yl)phosphine (0.335 g, 0.815 mmol), potassium phosphate (7.57 g, 35.7 mmol), toluene (90 mL) and water (9 mL) was degassed with nitrogen and then refluxed overnight. The toluene layer was dried on Na2SO4 and then further purified by column chromatography using dichloromethane in hexanes and then vacuum distilled to give 8-(4-(3-Isopropylphenyl)pyridine-2-yl)-2-methylbenzofuro[2,3-b]pyridine (2.2 g, 57% yield).

後処理

  1. customwas degassed with nitrogen
  2. temperaturerefluxed overnight
  3. dry with materialThe toluene layer was dried on Na2SO4
  4. customfurther purified by column chromatography
  5. distillationvacuum distilled

出典と根拠

ORDレコード
ord-60120eac046a40a3859a9708eca3fbe1
出典データセット
uspto-grants-2015_02
特許番号
US08946697B1

反応ノート

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