S. Pagilla, A. Kishore Kumar, V. Sunitha, and A. K. D. Bhavani, “PPEG-mediated synthesis of 6-pyrazinyl-/fused pyrazinyl¬quinazolin-4(3H)-ones using Castro–Stephen coupling, oxidation and cyclocondensation reactions”, J. Serb. Chem. Soc., vol. 85, no. 5, pp. 601–608, May 2020.