Highly Enantioselective Inverse-Electron-Demand Hetero-DielsâAlder Reactions of α,β-Unsaturated Aldehydes This work was supported by the NIH (GM-59316), with additional support from the Schweizerischer Nationalfonds zur Förderung der wissenschaftlichen Forschung (postdoctoral fellowship to K.G.), and the National Science Foundation (predoctoral fellowship to D.E.C.). We are grateful to Dr. R. Staples for carrying out the X-ray crystal structure analysis of 1.
作者:David E. Bergbreiter、Christopher Hobbs、Chayanant Hongfa
DOI:10.1021/jo102044m
日期:2011.1.21
functional soluble polyolefins for use as supports for salen ligands and metal complexes is described. Examples and applications that use both polyisobutylene (PIB)- and polyethylene (PEOlig)-bound recoverable/recyclable salen ligands/metal complexes are detailed. In the case of using PIB as a support, the polymer-bound complexes can be recovered through the use of latent biphasic or a thermomorphic