1-Bromopropane → 5-(2,4-Dimethoxy-3-propoxy-phenyl)-3H-isobenzofuran-1-one

HRID 2171153ノート

反応式

HRID 2171153 の反応式
[OH:1][C:2]1[C:3]([O:20][CH3:21])=[C:4]([C:10]2[CH:11]=[C:12]3[C:16](=[CH:17][CH:18]=2)[C:15](=[O:19])[O:14][CH2:13]3)[CH:5]=[CH:6][C:7]=1[O:8][CH3:9].C(=O)([O-])[O-].[K+].[K+].[CH2:28](Br)[CH2:29][CH3:30]>C(#N)C>[CH3:21][O:20][C:3]1[C:2]([O:1][CH2:28][CH2:29][CH3:30])=[C:7]([O:8][CH3:9])[CH:6]=[CH:5][C:4]=1[C:10]1[CH:11]=[C:12]2[C:16](=[CH:17][CH:18]=1)[C:15](=[O:19])[O:14][CH2:13]2

参加物

5

反応物 3

HCID 78401-BromopropaneHCID 11430Potassium CarbonateHCID 674677565-(3-Hydroxy-2,4-dimethoxy-phenyl)-3H-isobenzofuran-1-one

生成物 1

HCID 674630045-(2,4-Dimethoxy-3-propoxy-phenyl)-3H-isobenzofuran-1-one収率 32.8%

試薬・触媒・溶媒 1

HCID 6342Acetonitrile溶媒

反応条件

温度
80 °C

実験手順

To a stirring solution of 5-(3-Hydroxy-2,4-dimethoxy-phenyl)-3H-isobenzofuran-1-one (80 mg, 0.279 mmol) in acetonitrile (10 mL) was added potassium carbonate (115 mg, 0.837 mmol) and propyl bromide (103 mg, 0.837 mmol) and the resultant reaction mixture was heated to 80° C. for 4 h. The reaction mixture was filtered through celite and the filtrate was concentrated under reduced pressure. The obtained residue was purified by column chromatography (silica gel, 0-50% ethyl acetate in pet ether) to afford the title compound as a solid (30 mg, 32.8%).

後処理

  1. customthe resultant reaction mixture
  2. filtrationThe reaction mixture was filtered through celite
  3. concentrationthe filtrate was concentrated under reduced pressure
  4. customThe obtained residue was purified by column chromatography (silica gel, 0-50% ethyl acetate in pet ether)

出典と根拠

ORDレコード
ord-08b707ccfc564fd2bb4b45c8f590c406
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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