Oxalyl chloride → 3,5-Dichloro-4-(2,2-dichloro-1,1-difluoroethoxy)phenyl isocyanate
Reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([NH2:16])[CH:5]=[C:6]([Cl:15])[C:7]=1[O:8][C:9]([F:14])([F:13])[CH:10]([Cl:12])[Cl:11].C(Cl)(=O)[C:18](Cl)=[O:19]>C(Cl)(Cl)(Cl)Cl>[Cl:1][C:2]1[CH:3]=[C:4]([N:16]=[C:18]=[O:19])[CH:5]=[C:6]([Cl:15])[C:7]=1[O:8][C:9]([F:14])([F:13])[CH:10]([Cl:12])[Cl:11]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
3,5-Dichloro-4-(2,2-dichloro-1,1-difluoroethoxy)benzenamine (12 g, 0.04 mole) was added to a solution of 20 g oxalyl chloride in 100 ml CCl4 and heated under reflux with stirring for 0.5 hour. A solid precipitated. The carbon tetrachloride and excess oxalyl chloride were removed by evaporation in a rotary evaporator. The residue (16 g) was a slightly oily white solid, which was used in the next reaction without purification.