Microwave-accelerated 1,3-dipolar cycloaddition for the formation of fused [n]polynorbornanes
作者:Richard C. Foitzik、Adam J. Lowe、Frederick M. Pfeffer
DOI:10.1016/j.tetlet.2009.03.079
日期:2009.5
Microwave irradiation induces the 1,3-dipolar cycloaddition of cyclobutane epoxides with norbornenes to afford [n]polynorbornane scaffolds. Greatly enhanced reaction rates and significantly reduced levels of decomposition were observed. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.
Factors Influencing Anion Binding Stoichiometry: The Subtle Influence of Electronic Effects
作者:Adam J. Lowe、Gail A. Dyson、Frederick M. Pfeffer
DOI:10.1002/ejoc.200701015
日期:2008.3
3b were prepared, and their ability to interact with simple anions in DMSO was investigated using 1H NMR and UV/ Vis spectroscopy. Binding of dihydrogenphosphate by the six receptors appeared to be based solely on steric constraints. In contrast, the bindingstoichiometry of 3a and 3b to acetate was controlled by subtleelectronicfactors.