Organic Isocyanates and Isothiocyanates: Versatile Intermediates in Agrochemistry

Abstract In recent decades, organic isocyanates and isothiocyanates have been often applied as reactive intermediates in research syntheses or manufacturing routes of many agrochemicals. These heterocumulenes allowed the installation of crucial carboxylic functions, such as carbamates, ureas, and semicarbazones, but have also been used for the construction of five- and six-membered heterocycles, such as tetrazolones, thiazoles, and uracils. 1 Introduction 2 Preparation of Carboxylic Acid Functions 3 Preparation of Heterocyclic Rings 4 Conclusion