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Seven 2-tert-butyl-4-chloro-5-(3′-aryl-2′-oxo-5′-oxazolidinylmethoxy)-3(2H)pyridazinones were synthesized via the reaction of aryl isocyanates and 2-tert-butyl-4-chloro-5-(2,3-epoxypropyloxy)-3(2H)(pyridazinones) prepared by the reaction of 2-tert-butyl-4-chloro-5-hydroxy-3(2H)pyridazinones with epichlorohydrin. The structures of the title compounds were confirmed by ~(1)H NMR, HR MS and IR. The (bioassay) tests showed the inhibition of compound 2b and that of compound 2c against Colletotrichum (lagenarium) under (500 mg/L) were 33% and 50%, respectively.
Seven 2-tert-butyl-4-chloro-5- (3’-aryl-2’-oxo-5’-oxazolidinylmethoxy) -3 (2H) pyridazinones were synthesized via the reaction of aryl isocyanates and 2-tert-butyl- 4-chloro-5- (2,3-epoxypropyloxy) -3 (2H) (pyridazinones) prepared by the reaction of 2-tert-butyl- (bioassay) tests showed the inhibition of compound 2b and that of compound 2c against Colletotrichum (lagenarium) under (500 mg / L) were 33% and 50%, respectively.