Co. Kangani et He. Master, STUDIES IN ANTHRAQUINONE - PREPARATION OF 3-SUBSTITUTED PYRIMIDO ANTHRAQUINONE AND RELATED FUSED 1,2,4-TRIAZOLO, TETRAZOLO AND PYRAZOLINO DERIVATIVES, Indian Journal of Heterocyclic Chemistry, 6(2), 1996, pp. 85-90
Syntheses of 3-aryl-2-mercapto-4(3H)-oxopyrimido[4,5-a] anthraquinone,
3-aryl-2-hydrazino-4(3H)-oxo-pyrimido[4,5-a] anthraquinone, 4-aryl-1,
3,4-triazolo [4,3-a] pyrimido[4,5-a] anthraquinone, tetrazolo [4,5-a]-
pyrimido [4,5-a] anthraquinone and pyrazolino-pyrimido anthraquinone d
erivatives have been achieved.