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Cesium carbonate → 2-Chloro-4-(5-ethyl-3,3-dimethyl-2,4-dioxopyrrolidin-1-yl)-3-methylbenzonitrile

HRID 1967239
ノート
印刷プレビュー

反応式

HRID 1967239 の反応式
[Cl:1][C:2]1[C:9]([CH3:10])=[C:8](I)[CH:7]=[CH:6][C:3]=1[C:4]#[N:5].[CH2:12]([CH:14]1[NH:18][C:17](=[O:19])[C:16]([CH3:21])([CH3:20])[C:15]1=[O:22])[CH3:13].C(=O)([O-])[O-].[Cs+].[Cs+].C1(P(C2C=CC=CC=2)C2C3OC4C(=CC=CC=4P(C4C=CC=CC=4)C4C=CC=CC=4)C(C)(C)C=3C=CC=2)C=CC=CC=1>O1CCOCC1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].O>[Cl:1][C:2]1[C:9]([CH3:10])=[C:8]([N:18]2[CH:14]([CH2:12][CH3:13])[C:15](=[O:22])[C:16]([CH3:21])([CH3:20])[C:17]2=[O:19])[CH:7]=[CH:6][C:3]=1[C:4]#[N:5]
参加物実験手順後処理出典と根拠反応ノート

参加物

8

反応物 4

HCID 10796Cesium carbonateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 167319952-Chloro-4-iodo-3-methylbenzonitrileHCID 595570275-Ethyl-3,3-dimethylpyrrolidine-2,4-dione

生成物 1

HCID 595568982-Chloro-4-(5-ethyl-3,3-dimethyl-2,4-dioxopyrrolidin-1-yl)-3-methylbenzonitrile収率 27.2%

試薬・触媒・溶媒

3
HCID 9811564Bis(dibenzylideneacetone)palladium触媒HCID 962Water溶媒HCID 312751,4-Dioxane溶媒

実験手順

A solution of 2-chloro-4-iodo-3-methylbenzonitrile (983 mg), 5-ethyl-3,3-dimethylpyrrolidine-2,4-dione (550 mg), cesium carbonate (1.73 g), tris(dibenzylideneacetone)dipalladium(0) (325 mg) and 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (615 mg) in dioxane was reacted in a microwave reactor at 120° C. for 5 hr. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography and recrystallized from THF/hexane to give the title compound as a colorless solid (yield: 294 mg, 27%).

後処理

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography
  6. customrecrystallized from THF/hexane

出典と根拠

ORDレコード
ord-c4fcd49593334b4ba4646f6b9eed4cf8
出典データセット
uspto-grants-2013_04
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08420694B2

反応ノート

読み込み中…

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