AlMarzouq, D. S.; Zaky, O. S.; AlNajjar, A. A.; Sadek, K. U. Pressure As Effective Green Technology for Synthesis of Polyfunctionally Substituted Heteroaromatics: Synthesis of a Variety of pyrazolo[1,5-a]pyrimidines. Eur. J. Chem. 2016, 7, 347-351.