Pi-electron conjugation effects in antiaromatic dehydro[12]- and aromatic dehydro[18]-annulenes |
| |
Authors: | Mitzel Frieder Boudon Corinne Gisselbrecht Jean-Paul Gross Maurice Diederich François |
| |
Institution: | Laboratorium für Organische Chemie, ETH-H?nggerberg, CH-8093, Zürich, Switzerland. |
| |
Abstract: | N,N-Dimethylanilino-substituted perethynylated dehydro12]- and dehydro18]-annulenes were prepared by oxidative acetylenic coupling of cis-bisdeprotected tetraethynylethene derivatives obtained by a new photochemical route; they display strongly bathochromically shifted longest-wavelength absorption bands compared to their silyl-substituted counterparts resulting from efficient intramolecular charge-transfer between the peripheral pi-electron donors and the electron-accepting central acetylenic core. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|