A novel reaction of 7,7,8,8-tetracyanoquinodimethane (TCNQ): charge-transfer chromophores by [2 + 2] cycloaddition with alkynes |
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| Authors: | Kivala Milan Boudon Corinne Gisselbrecht Jean-Paul Seiler Paul Gross Maurice Diederich François |
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| Affiliation: | Laboratorium für Organische Chemie, ETH Zürich, H?nggerberg, HCI, CH-8093 Zürich, Switzerland. |
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| 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. |
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