Water → (3-Bromo-2-hydroxy-5-methylphenyl)(phenyl)methanone

HRID 1042526

反応式

HRID 1042526 の反応式
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([CH3:8])=[CH:4][C:3]=1[C:9]([C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1)=[O:10].[Br:17]Br.O>ClCCl.[Fe]>[Br:17][C:7]1[C:2]([OH:1])=[C:3]([C:9]([C:11]2[CH:12]=[CH:13][CH:14]=[CH:15][CH:16]=2)=[O:10])[CH:4]=[C:5]([CH3:8])[CH:6]=1

参加物

6

反応物 3

HCID 962WaterHCID 24408BromineHCID 738512-Hydroxy-5-methylbenzophenone

生成物 1

HCID 12925474(3-Bromo-2-hydroxy-5-methylphenyl)(phenyl)methanone収率 86.2%

試薬・触媒・溶媒 2

HCID 23925Iron触媒HCID 6344Dichloromethane溶媒2 回

実験手順

To a solution of 116 g (0.55 mol) of 25 in 200 mL of dry dichloromethane, 1.5 g of iron turnings was added, and then a solution of 41.4 mL (136 g, 0.83 mol) of bromine in 500 mL of dichloromethane was added dropwise with vigorous stirring for 20 min. This mixture was refluxed for 30 min, and then 1200 mL of water was added. The organic layer was separated, and the aqueous layer was extracted with 2×300 mL of dichloromethane. The combined organic extract was washed by saturated aqueous Na2SO3, dried over K2CO3, and then evaporated to dryness. Drying the residue in vacuum gave 138 g (86%) of the title product (bp 165-172° C./1 mm).

後処理

  1. temperatureThis mixture was refluxed for 30 min
  2. customThe organic layer was separated
  3. extractionthe aqueous layer was extracted with 2×300 mL of dichloromethane
  4. extractionThe combined organic extract
  5. washwas washed by saturated aqueous Na2SO3
  6. dry with materialdried over K2CO3
  7. customevaporated to dryness
  8. customDrying the residue in vacuum

出典と根拠

ORDレコード
ord-51fefc6c3a6741d3bfbca1dfaaa15535
出典データセット
uspto-grants-2013_10
特許番号
US08557936B2

関連ノート

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