title: A novel reaction of 7,7,8,8-tetracyanoquinodimethane (TCNQ): charge-transfer chromophores by [2 + 2] cycloaddition with alkynes.
abstract: A series of donor-acceptor molecules, featuring intense low-energy intramolecular charge-transfer bands, was prepared by regioselective [2 + 2] cycloaddition between 7,7,8,8-tetracyanoquinodimethane (TCNQ) and N,N-dialkylanilino-substituted (DAA-substituted) alkynes, followed by ring opening of the initially formed cyclobutenes.
authors.affiliation: Laboratorium für Organische Chemie, ETH Zürich, Hönggerberg, HCI, CH-8093 Zürich, Switzerland.
authors.forename: Milan
authors.initials: M
authors.lastname: Kivala
authors.forename: Corinne
authors.initials: C
authors.lastname: Boudon
authors.forename: Jean-Paul
authors.initials: JP
authors.lastname: Gisselbrecht
authors.forename: Paul
authors.initials: P
authors.lastname: Seiler
authors.forename: Maurice
authors.initials: M
authors.lastname: Gross
authors.forename: François
authors.initials: F
authors.lastname: Diederich