Acid-Promoted Rearrangement of Carbonate Functionality Anchored to the Lower Rim of a Calix[4]arene Skeleton: A New Class of Chiral Calix[4]arene and Its Chiroptical Properties
作者:Dusan Hesek、Yoshihisa Inoue、Michael G. B. Drew、Paul D. Beer、Guy A. Hembury、Hitoshi Ishida、Fumiko Aoki
DOI:10.1021/ol005984b
日期:2000.7.1
A unique calix[4]arene lower-rim intramolecular rearrangement, resulting in molecular asymmetry arising from the upper- and lower-rim substitution pattern, produces a new class of inherentlychiralcalix[4]arenes in a partialconeconformation. This was aided by molecular rigidification arising from pi-pi and C-H.pi interactions between bulky lower-rim substituents, with the corresponding circular