Dichloromethane → 1-[2-(2-chloro-pyridin-4-yl)-5H-pyrrolo[2,3-b]pyrazin-7-yl]-2,2-dimethyl-propan-1-one

HRID 547465ノート

反応式

HRID 547465 の反応式
Br[C:2]1[N:3]=[C:4]2[C:10]([C:11](=[O:16])[C:12]([CH3:15])([CH3:14])[CH3:13])=[CH:9][NH:8][C:5]2=[N:6][CH:7]=1.[Cl:17][C:18]1[CH:23]=[C:22](B(O)O)[CH:21]=[CH:20][N:19]=1.C(=O)([O-])[O-].[K+].[K+].C(Cl)Cl>C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].O.O1CCOCC1>[Cl:17][C:18]1[CH:23]=[C:22]([C:2]2[N:3]=[C:4]3[C:10]([C:11](=[O:16])[C:12]([CH3:15])([CH3:14])[CH3:13])=[CH:9][NH:8][C:5]3=[N:6][CH:7]=2)[CH:21]=[CH:20][N:19]=1

参加物

8

反応物 4

HCID 6344DichloromethaneHCID 11430Potassium CarbonateHCID 51515952-Chloropyridine-4-boronic acidHCID 578292181-(2-Bromo-5H-pyrrolo[2,3-b]pyrazin-7-yl)-2,2-dimethylpropan-1-one

生成物 1

HCID 578296311-[2-(2-chloro-pyridin-4-yl)-5H-pyrrolo[2,3-b]pyrazin-7-yl]-2,2-dimethyl-propan-1-one収率 32.2%

試薬・触媒・溶媒 3

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)触媒HCID 962Water溶媒HCID 312751,4-Dioxane溶媒

実験手順

A mixture of 1-(2-bromo-5H-pyrrolo[2,3-b]pyrazin-7-yl)-2,2-dimethyl-propan-1-one (0.430 g, 1.53 mmol), 2-chloropyridine-4-boronic acid (0.362 g, 2.30 mmol), potassium carbonate (0.782 g, 5.66 mmol), Pd(dppf)Cl2.CH2Cl2 (0.098 g, 0.12 mmol), 10 mL dioxane and 2.5 mL water was stirred at 160° C. in a microwave for 30 min. The resulting red mixture was partitioned between 80 mL of ethyl acetate and 150 mL of water. The aqueous layer was extracted with two 80 mL portions of ethyl acetate. The combined organic layers were dried over MgSO4, filtered and concentrated to a residue. Silica gel chromatography (0->100% EtOAc/hexanes) afforded 0.155 g (32%) of 1-[2-(2-chloro-pyridin-4-yl)-5H-pyrrolo[2,3-b]pyrazin-7-yl]-2,2-dimethyl-propan-1-one as a red solid.

後処理

  1. customThe resulting red mixture was partitioned between 80 mL of ethyl acetate and 150 mL of water
  2. extractionThe aqueous layer was extracted with two 80 mL portions of ethyl acetate
  3. dry with materialThe combined organic layers were dried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated to a residue

出典と根拠

ORDレコード
ord-feb5d30db265411ca606a4ad99d353a5
出典データセット
uspto-grants-2011_05
特許番号
US07939531B2

反応ノート

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