SYNTHESIS OF 3-AND 2,3-SUBSTITUTED PYRAZOLO[1,5-a][1,10]PHENANTHROLINES

Abstract

The reaction of N-amino-1,10-phenanthrolinium mesitylenesulfonate with acceptor-substituted alkenes in the K2CO3–DMSO system gave 3- and 2,3-substituted pyrazolo[1,5-a][1,10]phenanthrolines. A wide range of alkenes enter into this reaction; however, in the case of nitro derivatives, complex mixtures of products were formed.