Pyrazoles

Five-membered ring systems containing two nitrogen atoms adjacent to each other are called pyrazoles. This article serves to cover the comprehensive literature on pyrazoles during the 10 year period 2008–18. The previous two articles of this volume series on pyrazoles dealt more with the theoretical, experimental structural and thermodynamic methods and less with the reactivity, synthetic and applications of pyrazoles. The last article and the last 10 years, more literature have appeared on the synthesis and reactivity of the pyrazole ring systems. Also, the pyrazole core has been utilized as a reagent in modern synthetic reactions and as agricultural/pharmaceutical drugs. This article will focus on these current developments.