Chiral aryl iodide catalysts for the enantioselective synthesis of para-quinols
作者:Kelly A. Volp、Andrew M. Harned
DOI:10.1039/c3cc00013c
日期:——
Molecular modelling of an iodine(III) phenoxide was used as a starting point in the design of chiral aryl iodide catalysts for stereoselective oxidative dearomatization reactions. Using this approach, catalysts derived from 8-iodotetralone and tartaric acid were constructed and used to synthesize enantioenriched para-quinols from phenols.
Methyl (alpha-naphthyl) acrylates bearing an ortho-substituent with a hydrogen atom produce naphthocy-clobutenes upon Ir(Fppy)(3)-mediated photosensitization. This reaction can be described as a carbon analogue of the Norrish-Yang reaction: upon triplet excitation of the acrylate a 1,5-HAT results in a 1,4-diradical which forms the cyclobutene. Diastereoselectivities up to >20:1 were observed for the ring-closure reaction.