Fungitoxicity of 2,4-Dichloro-3,5-dinitrobenzoates

Abstract

MANY aromatic compounds containing halogen substituents activated by the presence of electronegative groups, particularly nitro groups, in ortho and para positions are fungitoxic. For example, 2,4-dinitrofluoro-benzene and its 5-halogenated derivatives protect cotton fabric from attack by Myrothecium verrucaria¹, 1,5-dichloro-2,4-dinitrobenzene is a soil fungicide² and l-chloro-2,4-dinitronaphthalene controls a number of plant pathogenic fungi³. The influence of the introduction of a carboxy or carboalkoxy substituent into compounds of this type has not received much attention although the fungicidal activity of certain chlorodinitrobenzoates is reported in recent patent literature⁴.