D. Bhinge, S. et al. 2010. Bromodimethyl Sulphonium Bromide Catalyzed Efficient One Pot Synthesis of 3,4-Dihydropyrimidine-2-(1H)-ones: An Improved High Yielding Simple Protocol for The Biginelli Reaction. Asian Journal of Chemistry. 22, 5 (Mar. 2010), 3381–3384.