Hydrogen Peroxide → Styrene Oxide

HRID 1768393Notes

Reaction equation

HRID 1768393 reaction equation
[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.NC(N)=[O:11].C(=O)(O)[O-].[Na+].OO>O.S([O-])([O-])(=O)=O.[Mn+2]>[CH2:1]1[O:11][CH:2]1[C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1

Participants

7

Reactant 4

HCID 784Hydrogen PeroxideHCID 1176UreaHCID 7501StyreneHCID 516892Sodium Bicarbonate

Product 1

HCID 7276Styrene Oxide

Reagents, catalysts & solvents 2

HCID 24580Manganese SulfateCatalystHCID 962WaterSolvent

Procedure

To a mechanically stirred solution of styrene (1.0 mol), urea (40.8 mol), sodium bicarbonate (0.6 mol) and manganese sulphate (0.001 mol) in 500 ml of water at 0° C. is added 50% aqueous hydrogen peroxide (2.2 mol) drop-wise over a period of 3 hours. The reaction was allowed to stir for 10 hours. After 10 hours a separating funnel separated the organic layer of the reaction mixture. The aqueous layer was extracted with 4×20 mL diethyl ether. The combined organic layer was distilled to yield styrene oxide. The conversion to epoxide is 99% with selectivity 92%.

Workup

  1. customAfter 10 hours a separating funnel separated the organic layer of the reaction mixture
  2. extractionThe aqueous layer was extracted with 4×20 mL diethyl ether
  3. distillationThe combined organic layer was distilled

Sources & evidence

ORD record
ord-ad6ca12a91654f7298a744b5604091f5
Source dataset
uspto-grants-2007_06
Patent number
US07235676B2

Reaction notes

Loading…