1. 896. The reactivity of organophosphorus compounds. Part XIX. Reduction of nitro-compounds by triethyl phosphite: a convenient new route to carbazoles, indoles, indazoles, triazoles, and related compounds J. I. G. Cadogan,M. Cameron-Wood,R. K. Mackie,R. J. G. Searle J. Chem. Soc. 1965 4831