Cesium carbonate → Methyl 4-tert-butyl-2-(6-(trifluoromethyl)pyridin-2-yloxy)benzoate

HRID 538831ノート

反応式

HRID 538831 の反応式
[C:1]([C:5]1[CH:14]=[CH:13][C:8]([C:9]([O:11][CH3:12])=[O:10])=[C:7]([OH:15])[CH:6]=1)([CH3:4])([CH3:3])[CH3:2].F[C:17]1[CH:22]=[CH:21][CH:20]=[C:19]([C:23]([F:26])([F:25])[F:24])[N:18]=1.C([O-])([O-])=O.[Cs+].[Cs+]>CN(C=O)C.O>[C:1]([C:5]1[CH:14]=[CH:13][C:8]([C:9]([O:11][CH3:12])=[O:10])=[C:7]([O:15][C:17]2[CH:22]=[CH:21][CH:20]=[C:19]([C:23]([F:26])([F:25])[F:24])[N:18]=2)[CH:6]=1)([CH3:4])([CH3:2])[CH3:3]

参加物

6

反応物 3

HCID 10796Cesium carbonateHCID 27365012-Fluoro-6-(trifluoromethyl)pyridineHCID 20777194Methyl 4-tert-butyl-2-hydroxybenzoate

生成物 1

HCID 57687711Methyl 4-tert-butyl-2-(6-(trifluoromethyl)pyridin-2-yloxy)benzoate収率 41%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 6228Dimethylformamide溶媒

反応条件

温度
70 °C

実験手順

A mixture of methyl 4-tert-butyl-2-hydroxybenzoate (0.70 g, 3.4 mmol), 2-fluoro-6-(trifluoromethyl)pyridine (0.55 g, 3.4 mmol), and Cs2CO3 (1.1 g, 3.4 mmol) in DMF (15 mL) was heated at 70° C. for 19 hours. The reaction was diluted with water and extracted with ethyl acetate. The combined extracts were washed with brine and water, dried over sodium sulfate, and evaporated. The residue was purified by column chromatography on silica gel with 0-15% ethyl acetate in hexanes to give methyl 4-tert-butyl-2-(6-(trifluoromethyl)pyridin-2-yloxy)benzoate (0.49 g, 41% yield). LC/MS: m/z 354.3 (M+H)+ at 2.13 min (10%-99% CH3CN (0.035% TFA)/H2O (0.05% TFA)).

後処理

  1. extractionextracted with ethyl acetate
  2. washThe combined extracts were washed with brine and water
  3. dry with materialdried over sodium sulfate
  4. customevaporated
  5. customThe residue was purified by column chromatography on silica gel with 0-15% ethyl acetate in hexanes

出典と根拠

ORDレコード
ord-452a20b0a98144eeb7f0b6732ddc3e5c
出典データセット
uspto-grants-2014_10
特許番号
US08865771B2

反応ノート

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