ChemInform Abstract: Unexpected Regiospecific Michael Addition Product: Synthesis of 5,6‐Dihydrobenzo[1,7]phenanthrolines.

Abstract

Unexpected Regiospecific Michael Addition Product: Synthesis of 5,6-Dihydrobenzo[1,7]phenanthrolines. -Reaction of benzylidenedihydroacridinones (I) with malononitrile using montmorillonite KSF as catalyst leads to the regiospecific formation of expected phenanthroline-3-carbonitriles (V) whilst the use of NaH as base results in the regiospecific formation of unexpected Michael addition products (IV). -(ROOPAN*, S. M.; BHARATHI, A.; PALANIRAJA, J.; ANAND, K.; GENGAN, R. M.; RSC Adv. 5 (2015) 48, 38640-38645, http://dx.