... First published on the web 20th March 2013. ... G. Srimanta, KR Saroj, G. Tuhin, K. Nilufa and KP Bhisma, RSC Adv., 2012, 2, 3180 RSC . Typical experimental procedure for synthesis of 2-amino-5-substituted-1,3,4-oxadiazole (2a–m): A mixture of acid hydrazide (1.0 mmol) and ...