of acrylamides with 2-alkynoates via aza-Michael/C–H activation sequence for the synthesis of various 6-oxo nicotinic acid esters is described. The regioselectivity of the protocol has been confirmed by performing silver mediated protodecarboxylation of the corresponding 6-oxo nicotinic acid to furnish 2-pyridone. The developed protocol is copper or silver salt-free and uses inexpensive, safe, and
描述了Ru催化的
丙烯酰胺与2-炔酸酯通过氮杂-Michael / CH活化序列合成的6-氧代
烟酸酯的区域选择性级联环化反应。通过进行相应的6-氧代
烟酸的
银介导的原脱羧以提供2-
吡啶酮,已经证实了该方案的区域选择性。所开发的方案不含
铜或
银盐,并使用廉价,安全且对环境无害的基于过氧化物的“氧酮”作为唯一氧化剂。还演示了该协议的氧化还原中性版本。