Hydrogen Peroxide → 3-(6-Bromo-2-((tert-butyldimethylsilyl)oxy)-3-chloro-4-(4-methoxybenzyl)phenyl)propan-1-ol

HRID 2206775ノート

反応式

HRID 2206775 の反応式
[CH2:1]([C:4]1[C:17]([Br:18])=[CH:16][C:15]([CH2:19][C:20]2[CH:25]=[CH:24][C:23]([O:26][CH3:27])=[CH:22][CH:21]=2)=[C:14]([Cl:28])[C:5]=1[O:6][Si:7]([C:10]([CH3:13])([CH3:12])[CH3:11])([CH3:9])[CH3:8])[CH:2]=[CH2:3].CSC.B.[OH-:33].[Na+].OO>C1COCC1.O>[Br:18][C:17]1[C:4]([CH2:1][CH2:2][CH2:3][OH:33])=[C:5]([O:6][Si:7]([C:10]([CH3:13])([CH3:12])[CH3:11])([CH3:8])[CH3:9])[C:14]([Cl:28])=[C:15]([CH2:19][C:20]2[CH:21]=[CH:22][C:23]([O:26][CH3:27])=[CH:24][CH:25]=2)[CH:16]=1

参加物

7

反応物 4

HCID 784Hydrogen PeroxideHCID 14798Sodium HydroxideHCID 12423031(Dimethyl sulfide)trihydroboronHCID 86714082(2-Allyl-3-bromo-6-chloro-5-(4-methoxybenzyl)phenoxy)(tert-butyl)dimethylsilane

生成物 1

HCID 867140833-(6-Bromo-2-((tert-butyldimethylsilyl)oxy)-3-chloro-4-(4-methoxybenzyl)phenyl)propan-1-ol収率 65%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

To a solution of bromide 186 (2.57 g, 5.33 mmol) in THF (35 mL) was added borane dimethylsulfide complex (10M in THF, 0.18 mL, 1.76 mmol) at 0° C. The mixture was stirred at rt for 1 hr. The mixture was cooled to 0° C. and H2O (0.5 mL), aq. 3N NaOH solution (1.1 mL), 35% H2O2 (0.65 mL) were added to the mixture.) The mixture was stirred at 50° C. for 30 min and cooled to rt. The mixture was extracted with EtOAc/aq. 50% NaCl solution (100 mL/100 mL). The organic layer was washed with brine, dried over MgSO4, filtered and concentrated in vacuo. The residue was purified by silica gel column chromatography to provide the product 187 (1.73 g, 65%).

後処理

  1. temperatureThe mixture was cooled to 0° C.
  2. stirring) The mixture was stirred at 50° C. for 30 min
  3. temperaturecooled to rt
  4. extractionThe mixture was extracted with EtOAc/aq
  5. washThe organic layer was washed with brine
  6. dry with materialdried over MgSO4
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo
  9. customThe residue was purified by silica gel column chromatography

出典と根拠

ORDレコード
ord-b9737884513241aa88b1e102ef006154
出典データセット
uspto-grants-2016_06
特許番号
US09371303B2

反応ノート

読み込み中…