Reaction of ketene dithioacetals with pyrazolylcarbohydrazide: Synthesis and biological activities of ethyl 5‐amino‐1–(5′‐methyl‐1′‐t‐butyl‐4′‐pyrazolyl)carbonyl‐3‐methylthio‐1 H‐pyrazole‐4‐carboxylate

Abstract

AbstractThe title compound, C16H23N5O3S, ethyl 5‐amino‐l‐(5′‐methyl‐l'‐t‐butyl‐4′‐pyrazolyl)carbonyl‐3‐methylthio 1H‐pyrazole‐4‐carboxylate (5) has been synthesized by the treatment of ethyl 2‐cyano‐3,3‐dimethylthioacrylate with 1 ‐t‐butyl‐5‐methyl‐4‐hydrazinocarbonylpyrazole (4) in refluxed ethanol. The possible mechanism of the above reaction was also discussed. The results of biological test show that the title compound has fungicidal and plant growth regulation activities.