The catalytic effects of guests 5-7 on the cyclization of 1 and 3 have been measured at 62 °C in MeCN. A record rate acceleration of more than 2000 times has been observed in the cyclization of the tricationic host 3 featuring large diazapyrenium π-surfaces by tetrathiafulvalene guests 6 and 7. The results emphasize the role played by extended π-surfaces in the host and the goodness of a tetrathiafulvalene core in the guest, enhanced by polyethereal side arms.
Record rate enhancements for Tetrathiafulvalene guests in the formation of Bipyridinium- and Diazapyrenium-Based [2]Pseudorotaxanes / Bruschini, Michele; Ercolani, Gianfranco; Gallina, Stefano; Mencarelli, Paolo. - In: JOURNAL OF ORGANIC CHEMISTRY. - ISSN 0022-3263. - STAMPA. - 83:18(2018), pp. 11446-11449. [10.1021/acs.joc.8b01786]
Record rate enhancements for Tetrathiafulvalene guests in the formation of Bipyridinium- and Diazapyrenium-Based [2]Pseudorotaxanes
Bruschini, Michele;Gallina, Stefano;Mencarelli, Paolo
2018
Abstract
The catalytic effects of guests 5-7 on the cyclization of 1 and 3 have been measured at 62 °C in MeCN. A record rate acceleration of more than 2000 times has been observed in the cyclization of the tricationic host 3 featuring large diazapyrenium π-surfaces by tetrathiafulvalene guests 6 and 7. The results emphasize the role played by extended π-surfaces in the host and the goodness of a tetrathiafulvalene core in the guest, enhanced by polyethereal side arms.| File | Dimensione | Formato | |
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