Enols as feasible acid components in the Ugi condensation.

Org Lett

Laboratorio Química Orgánica y Bioorgánica (L.O.B.O.), Departamento Química Orgánica e Inorgánica, Facultad de Veterinaria, Universidad de Extremadura, 10071 Cáceres, Spain.

Published: December 2012

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.

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http://dx.doi.org/10.1021/ol302976gDOI Listing

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