An environmentally benign double Michael addition reaction of heterocyclic ketene aminals with quinone monoketals for diastereoselective synthesis of highly functionalized morphan derivatives in water
作者:Yu-Lu Ma、Kai-Min Wang、Rong Huang、Jun Lin、Sheng-Jiao Yan
DOI:10.1039/c7gc01435j
日期:——
A efficient and concise one-pot procedure has been developed for the synthesis of highly functional morphan derivatives 3 based on diastereoselective double Michael addition reactions of various quinone monoketals 1 with a variety of heterocyclic ketene aminals (HKAs) 2 in the green solvent water at 60 °C. This protocol is especially suitable for efficient and rapid parallel syntheses of N-containing
Inspired by the concept of multicomponent reactions, a novel one-pot reaction involving heterocyclicketeneaminals (HKAs), Meldrum's acid and aldehydes has been developed and employed for the construction of a small library oftetrahydropyridinone-fused 1,3-diazaheterocycles.
A tandem reaction of heterocyclic ketene aminals and 1,2-diaza-1,3-dienes was developed for the expedient synthesis of pyrimidopyrrolopyridazine derivatives. This process involved an intramolecular conjugate addition followed by CuCl2-catalyzed hydrazone formation.