Potassium Carbonate → 2,4-Dibromo-1-(methoxymethoxy)benzene

HRID 931553

反応式

HRID 931553 の反応式
[Br:1][C:2]1[CH:7]=[C:6]([Br:8])[CH:5]=[CH:4][C:3]=1[OH:9].C(=O)([O-])[O-].[K+].[K+].[CH2:16]([O:18][CH2:19]Cl)C>CC(C)=O>[Br:1][C:2]1[CH:7]=[C:6]([Br:8])[CH:5]=[CH:4][C:3]=1[O:9][CH2:16][O:18][CH3:19]

参加物

5

反応物 3

HCID 11430Potassium CarbonateHCID 120052,4-DibromophenolHCID 18523Chloromethyl ethyl ether

生成物 1

HCID 105658332,4-Dibromo-1-(methoxymethoxy)benzene収率 91.6%

試薬・触媒・溶媒 1

HCID 180Acetone溶媒

実験手順

A flask was charged with 2,4-dibromophenol (50.4 g, 200 mmol), potassium carbonate (69.1 g, 500 mmol) and acetone (500 mL). The suspension was stirred at RT for 30 minutes and then treated dropwise with chloromethyl ethyl ether (19 mL, 213 mmol). After 3 h at RT the mixture was filtered and the filtrate was partitioned between EtOAc and water. The organic phase was separated, washed with water, aqueous saturated NaHCO3 and brine. The organic phase was dried over MgSO4 and the solvent was removed under reduced pressure to afford 54.2 g 2,4-dibromo-1-(methoxymethoxy)benzene, which was used in the next step without further purification.

後処理

  1. filtrationAfter 3 h at RT the mixture was filtered
  2. customthe filtrate was partitioned between EtOAc and water
  3. customThe organic phase was separated
  4. washwashed with water, aqueous saturated NaHCO3 and brine
  5. dry with materialThe organic phase was dried over MgSO4
  6. customthe solvent was removed under reduced pressure

出典と根拠

ORDレコード
ord-af6f9181686c4890b03998d24cf90967
出典データセット
uspto-grants-2016_03
特許番号
US09296759B2

関連ノート

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