Dimethyl Sulfoxide → 2-(4-methoxyphenyl)-1,3-benzoxazole

HRID 1030289Notes

Reaction equation

HRID 1030289 reaction equation
Cl[C:2]1[CH:7]=[CH:6][C:5]([C:8]2[O:9][C:10]3[CH:16]=[CH:15][CH:14]=[CH:13][C:11]=3[N:12]=2)=[CH:4][CH:3]=1.[CH3:17][O-:18].[Na+].CS(C)=O>O>[CH3:17][O:18][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[O:9][C:10]3[CH:16]=[CH:15][CH:14]=[CH:13][C:11]=3[N:12]=2)=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 679Dimethyl SulfoxideHCID 143552-(4-Chlorophenyl)benzoxazoleHCID 10942334Sodium Methoxide

Product 1

HCID 4838372-(4-methoxyphenyl)-1,3-benzoxazoleYield 88.8%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of 1.15 g (5 mmoles) of 2-(p-chlorophenyl)benzoxazole, 2.5 g of sodium methoxide and 10 ml of dimethyl sulfoxide is heated at 80° C.-90° C. under nitrogen atmosphere for one hour. The mixture is cooled and diluted with 100 ml of water. The title compound (1 g, 87 percent yield) precipitates and is recovered. It has a melting point of 99.5° C.-101.5° C.

Workup

  1. temperatureis heated at 80° C.-90° C. under nitrogen atmosphere for one hour
  2. temperatureThe mixture is cooled

Sources & evidence

ORD record
ord-a9ba27a56fe64d1b862496c41880af3e
Source dataset
uspto-grants-1992_04
Patent number
US05104960

Reaction notes

Loading…