作者:Christian Roussel、Alexandru T. Balaban、Ulf Berg、Michel Chanon、Roger Gallo、Gerd Klatte、Joseph A. Memiaghe、Jacques Metzger、Daniela Oniciu、Johanna Pierrot-Sanders
DOI:10.1016/s0040-4020(01)88642-7
日期:1983.1
The effect of the shape of a methylgroup on reactivity, which cannot be accounted for by considering a methylgroup as a spherical substituent with the appropriate van der Waals radius, was considered in kinetics of alkylalion of substituted pyridines and barriers to rotation and ground state conformations of an isopropyl group attached to a planar framework. The perturbation of a methylgroup by an