Trimethylacetamide → 2-tert-Butyl-4-(4-fluorophenyl)oxazole

HRID 250763

反応式

HRID 250763 の反応式
Br[CH2:2][C:3]([C:5]1[CH:10]=[CH:9][C:8]([F:11])=[CH:7][CH:6]=1)=O.[CH3:12][C:13]([CH3:18])([CH3:17])[C:14]([NH2:16])=[O:15]>O1CCOCC1>[C:13]([C:14]1[O:15][CH:2]=[C:3]([C:5]2[CH:10]=[CH:9][C:8]([F:11])=[CH:7][CH:6]=2)[N:16]=1)([CH3:18])([CH3:17])[CH3:12]

参加物

4

反応物 2

HCID 12957TrimethylacetamideHCID 967492-Bromo-1-(4-fluorophenyl)ethan-1-one

生成物 1

HCID 668690432-tert-Butyl-4-(4-fluorophenyl)oxazole収率 1,254.2%

試薬・触媒・溶媒 1

HCID 312751,4-Dioxane溶媒

実験手順

Stir a mixture of 2-bromo-4′-fluoroacetophenone (100 g, 460 mmol) and 2,2-dimethylpropionamide (93.06 g, 20 mmol) in 1,4-dioxane (600 mL) at reflux for 2 days. Filter the reaction mixture and concentrate the filtrate under reduced pressure. Subject the residue to silica gel chromatography, eluting with 60:1 hexane:ethyl acetate to provide 55 g (55%) of the desired compound.

後処理

  1. temperatureat reflux for 2 days
  2. filtrationFilter the reaction mixture
  3. concentrationconcentrate the filtrate under reduced pressure
  4. washeluting with 60:1 hexane

出典と根拠

ORDレコード
ord-a47fa0b356e24bcca17d8a318b419006
出典データセット
uspto-grants-2011_01
特許番号
US07863310B2

関連ノート

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