Page 1. SYNTHETIC COMMUNICATIONS, 20(15), 2365-2371 (1990) ... pressure. The solid residue was recrystallized from 20 ml of 2- propanol. ... (1) Fieser,LF, Fieser,M., "Reagents for Organic Synthesis", Vol.1. John Wiley and Sons, Inc., London, 1967, pp 524-6 ...