... Chem. Vol. ... Subse- quent reduction of 13 with iron and acetic acid produced (12) Acheson, RM “An Introduction to the Chemistry of Hetero- cyclic Compounds”, 3rd ed.; Wiley-Interscience: New York, 1976; pp 249-254. (13) Jain, P. C.; Chatterjee, S. K.; Anand, N. Indian J. Chem. ...