Picrylamino‐substituted heterocycles. IV. Pyrazoles

This paper describes the synthesis of various picryl‐ and picrylamino‐substituted pyrazoles. These compounds were prepared by condensing the appropriate pyrazole or aminopyrazole with a picryl halide or picrylpyrazole. Some of these materials could be nitrated under carefully controlled conditions to the corresponding nitropyrazole derivatives. The products were identified by n.m.r. spectroscopy, and their crystal densities and thermal stabilities were determined. Drop‐weight impact sensitivities were measured for some of the more interesting compounds.