Cesium carbonate → 5-(4-(Difluoromethoxy)-3-methoxy-2-propoxyphenyl)isoindolin-1-one

HRID 2171098ノート

反応式

HRID 2171098 の反応式
Br[C:2]1[CH:7]=[CH:6][C:5]([O:8][CH:9]([F:11])[F:10])=[C:4]([O:12][CH3:13])[C:3]=1[O:14][CH2:15][CH2:16][CH3:17].C(=O)([O-])[O-].[Cs+].[Cs+].CC1(C)C(C)(C)OB([C:32]2[CH:33]=[C:34]3[C:38](=[CH:39][CH:40]=2)[C:37](=[O:41])[NH:36][CH2:35]3)O1>CN(C)C=O.[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>[F:10][CH:9]([F:11])[O:8][C:5]1[CH:6]=[CH:7][C:2]([C:32]2[CH:33]=[C:34]3[C:38](=[CH:39][CH:40]=2)[C:37](=[O:41])[NH:36][CH2:35]3)=[C:3]([O:14][CH2:15][CH2:16][CH3:17])[C:4]=1[O:12][CH3:13]

参加物

6

反応物 3

HCID 10796Cesium carbonateHCID 219557955-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)isoindolin-1-oneHCID 674630661-Bromo-4-(difluoromethoxy)-3-methoxy-2-propoxybenzene

生成物 1

HCID 674677105-(4-(Difluoromethoxy)-3-methoxy-2-propoxyphenyl)isoindolin-1-one収率 14.3%

試薬・触媒・溶媒 2

HCID 11979704Tetrakis(triphenylphosphine)palladium触媒HCID 6228Dimethylformamide溶媒

反応条件

温度
85 °C

実験手順

To a stirring solution of 6-bromo-3-(difluoromethoxy)-2-methoxyphenol (300 mg, 1.115 mmol) in acetonitrile (10 mL) was added potassium carbonate (495 mg, 2.334 mmol) and propyl bromide (411 mg, 3.34 mmol) and the resultant reaction mixture was heated to 80° C. for 3 h. The reaction mixture was cooled to RT, filtered through celite and the filtrate was concentrated under reduced pressure to afford 300 mg of 1-Bromo-4-(difluoromethoxy)-3-methoxy-2-propoxybenzene (Int14-F2) as a solid. A stirring solution of 1-bromo-4-(difluoromethoxy)-3-methoxy-2-propoxybenzene (300 mg, 0.964 mmol) in dimethylformamide (5 mL) was purged with argon for 1 h, to this cesium carbonate (625 mg, 1.926 mmol), tetrakis(triphenylphosphine) palladium(0) (37 mg, 0.032 mmol) and 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isoindolin-1-one (199 mg, 0.771 mmol) were added and the resultant reaction mixture was heated to 80-90° C. for 3 h. The reaction mixture was cooled to RT, filtered and the filtrate was diluted with water and extracted with ethyl acetate (3×). The combined ethyl acetate layer was washed with brine and dried over anhydrous sodium sulphate and concentrated under reduced pressure. Purification of the residue by column chromatography (silica gel, 0-20% ethyl acetate in pet ether) afforded the title compound as a solid (40 mg, 11%).

後処理

  1. additionwere added
  2. customthe resultant reaction mixture
  3. temperatureThe reaction mixture was cooled to RT
  4. filtrationfiltered
  5. additionthe filtrate was diluted with water
  6. extractionextracted with ethyl acetate (3×)
  7. washThe combined ethyl acetate layer was washed with brine
  8. dry with materialdried over anhydrous sodium sulphate
  9. concentrationconcentrated under reduced pressure
  10. customPurification of the residue by column chromatography (silica gel, 0-20% ethyl acetate in pet ether)

出典と根拠

ORDレコード
ord-ea31ddb7683f4687a3c821825f6972ef
出典データセット
uspto-grants-2015_06
特許番号
US09051290B2

反応ノート

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