Sodium Carbonate → 4-Fluoro-3'-ethoxy-3-nitrobiphenyl

HRID 24458

反応式

HRID 24458 の反応式
[CH2:1]([O:3][C:4]1[CH:5]=[C:6](B(O)O)[CH:7]=[CH:8][CH:9]=1)[CH3:2].Br[C:14]1[CH:15]=[CH:16][C:17]([F:23])=[C:18]([N+:20]([O-:22])=[O:21])[CH:19]=1.C(=O)([O-])[O-].[Na+].[Na+]>C1(C)C=CC=CC=1.C(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>[F:23][C:17]1[CH:16]=[CH:15][C:14]([C:6]2[CH:7]=[CH:8][CH:9]=[C:4]([O:3][CH2:1][CH3:2])[CH:5]=2)=[CH:19][C:18]=1[N+:20]([O-:22])=[O:21]

参加物

7

反応物 3

HCID 10340Sodium CarbonateHCID 27363284-Bromo-1-fluoro-2-nitrobenzeneHCID 27739203-Ethoxybenzeneboronic acid

生成物 1

HCID 105633474-Fluoro-3'-ethoxy-3-nitrobiphenyl収率 90%

試薬・触媒・溶媒 3

HCID 178418397HCID 178418397、化合物触媒HCID 702Ethanol溶媒HCID 1140Toluene溶媒

実験手順

Tetrakis(triphenylphosphine)palladium(0.8 g) was added to a mixture of 4.2 g of 3-ethoxyphenylboronic acid, 5.0 g of 5-bromo-2-fluoronitrobenzene and 22 ml of 2 M sodium carbonate solution in 50 ml of toluene and 50 ml of ethanol. The mixture was heated to reflux for 2 hours. The cooled mixture was concentrated, water was added and the mixture was extracted twice with ethyl acetate. The ethyl acetate layer was washed with water, brine, dried, and concentrated. The residue was chromatographed on silica gel (5% ethyl acetate in hexane) to give 5.3 g (90% yield) of crude 4-fluoro-3′-ethoxy-3-nitrobiphenyl as a yellow oil.

後処理

  1. temperatureThe mixture was heated
  2. temperatureto reflux for 2 hours
  3. concentrationThe cooled mixture was concentrated
  4. additionwater was added
  5. extractionthe mixture was extracted twice with ethyl acetate
  6. washThe ethyl acetate layer was washed with water, brine
  7. customdried
  8. concentrationconcentrated
  9. customThe residue was chromatographed on silica gel (5% ethyl acetate in hexane)

出典と根拠

ORDレコード
ord-ff598d37ca9c4e469895bf384da9cbd7
出典データセット
uspto-grants-2005_02
特許番号
US06855730B2

関連ノート

読み込み中…