Potassium Carbonate → 3-(Pyridin-3-yl)aniline

HRID 324731

反応式

HRID 324731 の反応式
C(B(CC)[C:4]1[CH:5]=[N:6][CH:7]=[CH:8][CH:9]=1)C.Br[C:13]1[CH:14]=[C:15]([CH:17]=[CH:18][CH:19]=1)[NH2:16].C(=O)([O-])[O-].[K+].[K+]>O.C(COC)OC.C(OCC)(=O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[N:6]1[CH:7]=[CH:8][CH:9]=[C:4]([C:13]2[CH:14]=[C:15]([CH:17]=[CH:18][CH:19]=2)[NH2:16])[CH:5]=1

参加物

8

反応物 3

HCID 11430Potassium CarbonateHCID 115623-BromoanilineHCID 6428513-(Diethylboryl)pyridine

生成物 1

HCID 4595213-(Pyridin-3-yl)aniline収率 87.1%

試薬・触媒・溶媒 4

HCID 178418397HCID 178418397、化合物触媒HCID 962Water溶媒2 回HCID 80711,2-Dimethoxyethane溶媒HCID 8857Ethyl Acetate溶媒

反応条件

温度
80 °C

実験手順

A mixture of diethyl 3-pyridylborane (16.3 g, 0.11 mol), 3-bromoaniline (12.2 ml, 0.11 mol), potassium carbonate (45.8 g, 0.33 mol) and tetrakis(triphenylphosphine)palladium(0) (80 mg) in a mixture of water (40 ml) and dimethoxyethane (80 ml) is heated to 80° C. under a stream of nitrogen over night. After cooling the mixture is diluted with water and ethyl acetate and filtered through a fluted filterpaper. The layers are separated. The aqueous layer is extracted once with ethyl acetate. The combined organic phases are dried over sodium sulfate and concentrated under reduced pressure. The residue is dissolved in ethanol. Water is added and the mixture is evaporated to dryness. This residue crystallizes upon trituration with ice-cold water. The crystals are collected, dried and washed with petroleum ether to afford pure 2p (16.3 g, 87%). Mp 75-76° C.

後処理

  1. temperatureAfter cooling the mixture
  2. filtrationfiltered through a fluted filterpaper
  3. customThe layers are separated
  4. extractionThe aqueous layer is extracted once with ethyl acetate
  5. dry with materialThe combined organic phases are dried over sodium sulfate
  6. concentrationconcentrated under reduced pressure
  7. dissolutionThe residue is dissolved in ethanol
  8. additionWater is added
  9. customthe mixture is evaporated to dryness
  10. customThis residue crystallizes upon trituration with ice-cold water
  11. customThe crystals are collected
  12. customdried
  13. washwashed with petroleum ether

出典と根拠

ORDレコード
ord-cc22c73af09b4ffa83cbfb8c9b647656
出典データセット
uspto-grants-2001_04
特許番号
US06218547B1

関連ノート

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