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 ?-surfaces by tetrathiafulvalene guests 6 and 7. The results emphasize the role played by extended ?-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
Paolo Mencarelli
2018-01-01
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 ?-surfaces by tetrathiafulvalene guests 6 and 7. The results emphasize the role played by extended ?-surfaces in the host and the goodness of a tetrathiafulvalene core in the guest, enhanced by polyethereal side arms.File in questo prodotto:
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