Yadav, Jhillu S.; Lakshmi, K. Anantha; Reddy, N. Mallikarjuna; Prasad, Attaluri R.; Al Khazim Al Ghamdi, Ahmad Synthesis (Germany), 2012, vol. 44, # 16 p. 2595 - 2600 doi: 10.1055/s-0032-1316561