On the Nature of C-H⋅⋅⋅F-C Interactions in Hindered CF3-C(sp3) Bond Rotations
Artikel i vetenskaplig tidskrift, 2011

In cinchona alkaloid-based scaffolds, hindered CF3 rotations have been observed. The variation in barrier heights for the CF3 rotations is controlled by the corresponding entropic changes when the substituents are changed from an allyl to a bulky 9-methylanthracenyl group. Quantum chemical and experimental studies have shown that the noncovalent C3′[BOND]H1⋅⋅⋅F[BOND]C interactions in the studied cases possess a weak hydrogen bonding-like

hydrogen bonding

cinchona alkaloids

steric hindrance

conformational isomerism

fluorine

Författare

G. K. Surya Prakash

F. Wang

Jingguo Shen

Chuanfa Ni

Ralf Haiges

George A. Olah

Angewandte Chemie - International Edition

1433-7851 (ISSN) 1521-3773 (eISSN)

Vol. 50 11761-11764, S11761/1-S11761/93-

Ämneskategorier

Teoretisk kemi

Organisk kemi

DOI

10.1002/anie.201105288