Naphthoindazoles. Synthesis of 4,11‐Dimethoxy‐naphtho[2,3‐f]indazole‐5,10‐dione.

Abstract

Pyrazole derivatives Pyrazole derivatives R 0180Naphthoindazoles. Synthesis of 4,11-Dimethoxy-naphtho[2,3-f]indazole-5,10-dione. -A facile synthesis of the previously unknown title compound (V) via thermal cyclization of the N-nitroso derivative derived from 2-acetamidoanthraquinone (IV) is developed. -(SHCHEKOTIKHIN, A. E.; SILAEV, D. A.; BABERKINA, E. P.; MAKAROV, I. G.; BUYANOV, V. N.; SUVOROV, N. N.; Chem. Heterocycl. Compd. (N. Y.) 38 (2002) 5, 543-546; Mendeleev Russ. Univ. Chem. Technol., Moscow 125190, Russia; Eng.) -M. Schroeter 03-101