作者:Teresa G. Castellano、Ana G. Neo、Stefano Marcaccini、Carlos F. Marcos
DOI:10.1021/ol302976g
日期:2012.12.21
Heterocyclic enols are used for the first time as acid components in an Ugi-type multicomponent condensation. For that purpose, we have chosen enols containing a Michael acceptor, in order to facilitate an irreversible rearrangement of the primary Ugi adduct. The new four-component process leads readily and efficiently to heterocyclic enamines containing at least six elements of diversity.