Collect. Czech. Chem. Commun. 1989, 54, 1363-1369

Kinetics of methanolysis of 1-(2-halogeno and 2,6-dihalogenobenzoyl)-3-(4-chlorophenyl)ureas

Jaromír Kaválek, Lubomír Kacetl and Marcela Kaválková

Department of Organic Chemistry, Institute of Chemical Technology, 532 10 Pardubice


The methanolysis kinetics has been measured of 1-(2,6-difluorobenzoyl)-3-(4-chlorophenyl)urea (a larvicidal insecticide Dimilin) and of four other mono- and dihalogenobenzoyl derivatives. Polar and steric effects of halogen on the rate and dissociation constants is discussed.