Ru-Catalyzed Regioselective Cascade Annulation of Acrylamides with 2-Alkynoates for the Synthesis of Various 6-Oxo Nicotinic Acid Esters
作者:Dnyaneshwar N. Garad、Santosh B. Mhaske
DOI:10.1021/acs.joc.8b02783
日期:2019.2.15
of acrylamides with 2-alkynoates via aza-Michael/C–H activation sequence for the synthesis of various 6-oxo nicotinicacidesters is described. The regioselectivity of the protocol has been confirmed by performing silver mediated protodecarboxylation of the corresponding 6-oxo nicotinicacid to furnish 2-pyridone. The developed protocol is copper or silver salt-free and uses inexpensive, safe, and