Benzophenone → 1,1,2-Triphenylethanol

HRID 908539ノート

反応式

HRID 908539 の反応式
[CH2:1](Br)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[Mg].[C:10]([C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)(=[O:17])[C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1>CCOCC>[C:11]1([C:10]([C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)([OH:17])[CH2:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1

参加物

5

反応物 3

HCID 3102BenzophenoneHCID 7498Benzyl BromideHCID 5462224Magnesium

生成物 1

HCID 2450131,1,2-Triphenylethanol収率 65%

試薬・触媒・溶媒 1

HCID 3283Diethyl Ether溶媒3 回

実験手順

To a suspension of Mg (1.7 g, 0.07 mol) in dry ether (25 mL) was added a solution of benzyl bromide (10 mL, 1.5 equ.) in dry ether (25 mL) drop-wise and allowed to stir at RT for 1 h. By the time all magnesium was dissolved and the reaction mixture was cooled to 0° C. To this was added a solution of benzophenone (10 g, 0.05 mol) in dry ether (25 mL) and allowed to stir at RT for 5 h. The progress of the reaction was followed by TLC and when it was ready the reaction mixture was quenched with saturated NH4Cl solution, extracted with ether (100 mL), washed with brine, dried and concentrated under vacuum. The crudeproduct was purified by column chromatography on silica gel (10% ethyl acetate in pet. ether) to give the title compound (9.6 g, 65%) as a white solid. TLC: Pet. ether/EtOAc, 9:1, Rf=0.4

後処理

  1. temperaturethe reaction mixture was cooled to 0° C
  2. stirringto stir at RT for 5 h
  3. customwas quenched with saturated NH4Cl solution
  4. extractionextracted with ether (100 mL)
  5. washwashed with brine
  6. customdried
  7. concentrationconcentrated under vacuum
  8. customThe crudeproduct was purified by column chromatography on silica gel (10% ethyl acetate in pet. ether)

出典と根拠

ORDレコード
ord-2cdd4fc76c624d69911032a506321494
出典データセット
uspto-grants-2011_09
特許番号
US08017620B2

反応ノート

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