Synthesis of halogenated benzylidene aryl amines as potent fungicides against plant pathogenic fungi Rhizoctonia solani, R. bataticola and Sclerotium rolfsii

Abstract

Phytopathogenic fungi affect the economic yield of legumes, a key source of protein and so necessitate the development of new economically and environmentally viable products for protecting crops from diseases. Therefore, the current research programme was conducted for developing crop protection agents based on azomethine to save crop yield losses due to diseases caused by phytopathogenic fungi. Fourier Transform Infra Red and Nuclear Magnetic Resonance spectral data were used to establish the chemical structures of synthesized azomethines. In-vivo antifungal studies were carried out to test their antifungal potential against the test fungi. The respective best performers were 2,4,5-trichloro-N-(2,4-dichlorobenzylidene) aniline in managing R. solani, N-(2,4-dichlorobenzylidene)-4-fluoroaniline for R. bataticola and 3-Chloro-N-(2,6-dichlorobenzylidene)-4-fluoroaniline against S. rolfsii.