Sodium Carbonate → 2,4-Dimethyl-6-(2-thienyl)phenol

HRID 63381

反応式

HRID 63381 の反応式
Br[C:2]1[CH:7]=[C:6]([CH3:8])[CH:5]=[C:4]([CH3:9])[C:3]=1[OH:10].[S:11]1[CH:15]=[CH:14][CH:13]=[C:12]1B(O)O.C(=O)([O-])[O-].[Na+].[Na+]>C(COC)OC.O>[CH3:9][C:4]1[CH:5]=[C:6]([CH3:8])[CH:7]=[C:2]([C:12]2[S:11][CH:15]=[CH:14][CH:13]=2)[C:3]=1[OH:10]

参加物

5

反応物 3

HCID 10340Sodium CarbonateHCID 2999762-Bromo-4,6-dimethylphenolHCID 27339602-Thiopheneboronic acid

生成物 1

HCID 900022172,4-Dimethyl-6-(2-thienyl)phenol収率 45.4%

試薬・触媒・溶媒 1

HCID 18180031Water 1,2-dimethoxyethane溶媒

反応条件

温度
120 °C

実験手順

2-Bromo-4,6-dimethylphenol (500 mg, 2.49 mmol), 2-thiophenyl boronic acid (88 mg, 2.99 mmol), sodium carbonate (791 mg, 7.47 mmol) and Pd2(dppf)2Cl2 (406 mg, 0.49 mmol) were dissolved in dimethoxyethane/water 6 mL/3 mL, followed by stirring in microwave at 120° C. for 20 minutes. After the completion of the reaction, the reaction mixture was filtered using Celite. The filtrate was added with water, and extracted with ethyl acetate. The obtained organic layer was dried over magnesium sulfate, and purified by column chromatography (ethyl acetate:hexane=1:3) to obtain 2,4-dimethyl-6-(thiophene-2-yl)phenol (231 mg, 45%).

後処理

  1. customAfter the completion of the reaction
  2. filtrationthe reaction mixture was filtered
  3. additionThe filtrate was added with water
  4. extractionextracted with ethyl acetate
  5. dry with materialThe obtained organic layer was dried over magnesium sulfate
  6. custompurified by column chromatography (ethyl acetate:hexane=1:3)

出典と根拠

ORDレコード
ord-d42cca8043834a089eaabd02a21e9477
出典データセット
uspto-grants-2016_09
特許番号
US09447083B2

関連ノート

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