title: Enantioselective synthesis of helicenequinones and -bisquinones.
abstract: A convergent approach based on Diels-Alder reactions between polycyclic dienes and benzoquinones has emerged as a powerful tool for the construction of helicenequinones and bisquinones. Chemical resolution and asymmetric Diels-Alder reactions with sulfinyl quinones provide direct access to enantiopure derivatives. Biaryl or ferrocenyl dienes can be resolved leading to helicenequinones having additional axial or planar chirality.
authors.affiliation: Departamento de Química Orgánica (Módulo 01), Universidad Autónoma de Madrid, c/ Francisco Tomás y Valiente 7, Cantoblanco, 28049-Madrid, Spain. antonio.urbano@uam.es
authors.forename: Antonio
authors.initials: A
authors.lastname: Urbano
authors.forename: M Carmen
authors.initials: MC
authors.lastname: Carreño