Potassium cyanate → N-(2,6-difluorophenylsulphonyl)urea

HRID 1650991Notes

Reaction equation

HRID 1650991 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([F:8])[C:3]=1[S:9]([NH-:12])(=[O:11])=[O:10].[O-:13][C:14]#[N:15].[K+]>C(O)C>[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([F:8])[C:3]=1[S:9]([NH:12][C:14]([NH2:15])=[O:13])(=[O:10])=[O:11]

Participants

4

Reactant 2

HCID 11378442Potassium cyanateHCID 867439412,6-Difluorophenylsulphonylamide

Product 1

HCID 53937098N-(2,6-difluorophenylsulphonyl)urea

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

2,6-Difluorophenylsulphonylamide in an amount of 9.65 g and 6.5 g of potassium cyanate in 100 ml of ethanol are refluxed for 3 hours. After dilution with water and filtration while hot the solution is acidified with 5 ml of conc. hydrochloric acid. The desired N-(2,6-difluorophenylsulphonyl)urea is obtained in a yield of 10.0 g; melting point 198° C. (decomp.)

Workup

  1. filtrationAfter dilution with water and filtration while hot the solution

Sources & evidence

ORD record
ord-abf75c66161943cf801083107823cad5
Source dataset
uspto-grants-1990_05
Patent number
US04927452

Reaction notes

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