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2-Bromopyridine → 2-(2-Nitrophenyl)pyridine

HRID 1816285
ノート
印刷プレビュー

反応式

HRID 1816285 の反応式
[N+:1]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1Br)([O-:3])=[O:2].Br[C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][N:13]=1>CS(C)=O.N.[Cu].[Pd](Cl)Cl>[N+:1]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][N:13]=1)([O-:3])=[O:2]
参加物実験手順後処理出典と根拠反応ノート

参加物

7

反応物 2

HCID 79732-BromopyridineHCID 113411-Bromo-2-nitrobenzene

生成物 1

HCID 2316022-(2-Nitrophenyl)pyridine収率 22%

試薬・触媒・溶媒 4

HCID 23978Copper触媒HCID 24290Palladium Chloride触媒HCID 222Ammonia溶媒
HCID 679
Dimethyl Sulfoxide
溶媒

実験手順

A solution of 2-nitrobromobenzene (2.02 g), 2-bromopyridine (0.80 g), copper powder (1.29 g), and palladium dichloride (0.049 g) in 15 mL of DMSO was heated at 120° C. under N2 for 2 hours. Once cooled, the mixture was diluted with 100 mL of 10% aqueous ammonia and stirred for 30 min. This mixture was filtered, and the filtrate was extracted several times with CHCl3. The combined extracts were dried (Na2SO4) and evaporated. The crude product was purified by chromatography on silica gel with 20% EtOAc/hexanes to yield 0.12 g (22%) of 2-(2-Nitrophenyl)pyridine. [This compound was reported by Molina, Pedro; Lorenzo, Angeles; Aller, Enrique; Tetrahedron; 1992, 48, (22), 4601-4616.]

後処理

  1. temperatureOnce cooled
  2. filtrationThis mixture was filtered
  3. extractionthe filtrate was extracted several times with CHCl3
  4. dry with materialThe combined extracts were dried (Na2SO4)
  5. customevaporated
  6. customThe crude product was purified by chromatography on silica gel with 20% EtOAc/hexanes

出典と根拠

ORDレコード
ord-a8948701848c43f59746aececf9873cb
出典データセット
uspto-grants-2005_04
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US06884801B1

反応ノート

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