2-Chloro-3-nitropyridine → 2-Mesityl-3-nitropyridine

HRID 890191

反応式

HRID 890191 の反応式
Cl[C:2]1[C:7]([N+:8]([O-:10])=[O:9])=[CH:6][CH:5]=[CH:4][N:3]=1.[C:11]1([CH3:23])[CH:16]=[C:15]([CH3:17])[CH:14]=[C:13]([CH3:18])[C:12]=1OB(O)O.O.O.O.O.O.O.O.O.[OH-].[Ba+2].[OH-]>COC(OC)C.O.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>[C:11]1([CH3:23])[CH:16]=[C:15]([CH3:17])[CH:14]=[C:13]([CH3:18])[C:12]=1[C:2]1[C:7]([N+:8]([O-:10])=[O:9])=[CH:6][CH:5]=[CH:4][N:3]=1

参加物

7

反応物 3

HCID 796132-Chloro-3-nitropyridineHCID 17749109Barium hydroxide, octahydrateHCID 22237855Mesitylboric acid

生成物 1

HCID 222494912-Mesityl-3-nitropyridine収率 78.5%

試薬・触媒・溶媒 3

HCID 178418397HCID 178418397、化合物触媒HCID 962Water溶媒HCID 107951,1-Dimethoxyethane溶媒

実験手順

A solution of 2-chloro-3-nitropyridine (5.0 g, 31.5 mmol), mesitylboric acid (5.65 g, 34.7 mmol), Pd(PPh3)4 (1.82 g, 1.58 mmol) and barium hydroxide octahydrate (14.9 g, 47.3 mmol) in 2,2-dimethoxyethane (150 mL) and water (25 mL) was heated under reflux for one day. The mixture was filtered through Celite, and the filtrate was diluted with ethyl acetate, washed with brine, dried over anhydrous magnesium sulfate and evaporated. The residue was purified by silica gel column chromatogrpahy (10% ethyl acetate/hexane), to give the title compound (5.99 g) as pale yellow oil.

後処理

  1. temperatureunder reflux for one day
  2. filtrationThe mixture was filtered through Celite
  3. additionthe filtrate was diluted with ethyl acetate
  4. washwashed with brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customevaporated
  7. customThe residue was purified by silica gel column chromatogrpahy (10% ethyl acetate/hexane)

出典と根拠

ORDレコード
ord-f7a60431059348038138f2e337d17172
出典データセット
uspto-grants-2006_02
特許番号
US06995163B2

関連ノート

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