Conformational studies by dynamic NMR. 98. Stereodynamics of bond rotation in beta-hydroxyesters.
The dynamic processes due to restricted intramolecular motions have been observed in a number of variously substituted beta-hydroxyesters by variable-temperature NMR spectroscopy. The barriers for three such processes (i.e. Ph-C, t-Bu-C, and C(alpha)-C(beta) bond rotation) have been measured.
Bartoli
Giuseppe
G
Department of Organic Chemistry "A.Mangini", University of Bologna, Viale Risorgimento 4, Bologna 40136, Italy.
Lunazzi
Lodovico
L
Massaccesi
Massimo
M
Mazzanti
Andrea
A