Dibenzo-18-crown-6 → N'-(4-cyano-3-isopropyl-5-isothiazolyl)-N,N-dimethylfluoroformamidine

Participants

Reaction Steps

A mixture of 12.8 g of N'-(4-cyano-3-isopropyl-5-isothiazolyl)-N,N-dimethylchloroformamidine, 2.9 g of potassium fluoride and a catalytic amount of 2,3,11,12 -dibenzo-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene, in 60 ml of acetonitrile was stirred at ambient temperature for 12 hours. The reaction mixture was filtered and the filtrate was evaporated under reduced pressure. The residue was recrystallized from diethyl ether to give 2.5 grams of N'-(4-cyano-3-isopropyl-5-isothiazolyl)-N,N-dimethylfluoroformamidine, mp 100°-102°. The nmr and ir spectra were consistent with the assigned structure.

Provenance & Evidence