Dichloromethane → 4-(1-isobutyl-1H-pyrazol-4-yl)aniline

HRID 717912ノート

反応式

HRID 717912 の反応式
Br[C:2]1[CH:8]=[CH:7][C:5]([NH2:6])=[CH:4][CH:3]=1.[CH2:9]([N:13]1[CH:17]=[C:16](B2OC(C)(C)C(C)(C)O2)[CH:15]=[N:14]1)[CH:10]([CH3:12])[CH3:11].ClCCl.C(=O)([O-])[O-].[Na+].[Na+]>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].O1CCCC1.O.CO>[CH2:9]([N:13]1[CH:17]=[C:16]([C:2]2[CH:8]=[CH:7][C:5]([NH2:6])=[CH:4][CH:3]=2)[CH:15]=[N:14]1)[CH:10]([CH3:12])[CH3:11]

参加物

7

反応物 4

HCID 6344DichloromethaneHCID 78074-BromoanilineHCID 10340Sodium CarbonateHCID 27593921-Isobutyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

生成物 1

HCID 633283934-(1-isobutyl-1H-pyrazol-4-yl)aniline

試薬・触媒・溶媒 2

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)触媒HCID 21892291Methanol tetrahydrofuran water溶媒

反応条件

温度
85 °C

実験手順

A suspension of 4-bromoaniline (406 mg, 2.362 mmol), 1-isobutyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (650 mg, 2.60 mmol), [1,1′-bis(diphenylphosphino) ferrocene]dichloropalladium(II), complex with dichloromethane (57.9 mg, 0.071 mmol) and sodium carbonate (526 mg, 4.96 mmol) in a 6:2:1 mixture of tetrahydrofuran/water/methanol (12 ml) in a microwave vial was subjected to three vacuum/nitrogen purge cycles. The vial was sealed and heated in an oil bath at 85° C. overnight. The mixture was dissolved in a mixture of ethyl acetate (45 ml) and water (20 ml), and the separated aqueous layer was extracted with ethyl acetate (20 ml). The combined organic layers were washed with brine (20 ml), dried with magnesium sulfate, filtered and concentrated. Normal phase chromatography provided the title compound.

後処理

  1. custompurge cycles
  2. customThe vial was sealed
  3. dissolutionThe mixture was dissolved in a mixture of ethyl acetate (45 ml) and water (20 ml)
  4. extractionthe separated aqueous layer was extracted with ethyl acetate (20 ml)
  5. washThe combined organic layers were washed with brine (20 ml)
  6. dry with materialdried with magnesium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated

出典と根拠

ORDレコード
ord-19592b8c97904945a0aa91aee2395d88
出典データセット
uspto-grants-2015_11
特許番号
US09193723B2

反応ノート

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