title: [4+2] and [4+3] catalytic cycloadditions of allenes.
abstract: This feature review describes the development of catalytic [4+2] and [4+3] cycloadditions of allenes, as efficient and practical methodologies for assembling six and seven-membered cyclic systems. The different methodologies have been classified depending on the type of key reactive intermediate that was proposed in the catalytic cycle.
authors.affiliation: Centro Singular de Investigación en Química Biológica y Materiales Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, C/ Jenaro de la Fuente, s/n, 15782, Santiago de Compostela, Spain. fernando.lopez@csic.es joseluis.mascarenas@usc.es.
authors.forename: Fernando
authors.initials: F
authors.lastname: López
authors.forename: José L
authors.initials: JL
authors.lastname: Mascareñas