Page 1. Indian Journal of Chemistry Vol. 50B, May 2011, pp. 745-747 Note ... RB Mane, Department of Chemistry, Shivaji University, Kolhapur 416 004, India Page 2. INDIAN J. CHEM., SEC B, MAY 2011 746 O O N H NH X O R RCO O O O O CH3 CH3 RCO O O O CH3 CH3 OH ...