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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 12, No. 4, 2008, pp. 5-9
Bioline Code: ja08058
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Applied Sciences and Environmental Management, Vol. 12, No. 4, 2008, pp. 5-9

 en Synthesis and fungicidal activity of some alkyl – 2,4 – dinitrobenzenesulfenate esters
Adelowo, F.E.; Ojo, I.A.O. & Olu-arotiowa, O.A.

Abstract

2,4-dinitrobenzenesulfenyl chloride was prepared by reacting 2,4-dinitrochlorobenzene with benzyl mercaptan and subsequently cracking the formed 2,4-dinitrophenyl benzyl sulphide with sulfuryl chloride. The prepared 2,4-dinitrobenzenesulfenyl chloride reacted with series of primary alcohols in the presence of pyridine to give alkyl-2,4-dinitrobenzenesulfenate esters. The synthesized compounds were characterized by elemental analysis, thin layer chromatography (TLC), fourier-transform infrared, 1H and 13C nuclear magnetic resonance spectroscopic techniques. In vitro fungicidal assay of these alkyl sulfenate esters against Aspergillus flavus check for this species in other resources , Rhizopus stolonifer check for this species in other resources and Fusarium oxysporum check for this species in other resources showed that all the synthesized sulfenate esters were fungicidal. Increase in chain length of the alkyl substituents was found to reduce the fungicidal activity of the alkyl sulfenate esters. Presence of an hydroxyl group increased the fungicidal activity of ethyl-2,4-dinitrobenzenesulfenate by 5-to 10-fold.

 
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