title: Construction of pyridine rings by metal-mediated [2 + 2 + 2] cycloaddition.
authors.affiliation: Departamento de Química Orgánica y Unidad Asociada al CSIC, Facultad de Química, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
authors.forename: Jesús A
authors.initials: JA
authors.lastname: Varela
authors.forename: Carlos
authors.initials: C
authors.lastname: Saá