Enantioselective 4-Hydroxylation of Phenols under Chiral Organoiodine(I/III) Catalysis
作者:Kilian Muñiz、Laura Fra
DOI:10.1055/s-0036-1588808
日期:2017.7
intermolecular enantioselectivedearomatization of phenols under chiral (I/III) catalysis is reported. This protocol employs 3-chloroperoxybenzoic acid (m-CPBA) as the terminal oxidant together with a defined C 2-symmetric aryl iodide as the effective organocatalyst. This enantioselective reaction proceeds with complete selectivity under mild conditions and enables the hydroxylative dearomatization of a number
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.
decade has rendered chiral organoiodine(I/III) catalysis a reliable methodology in asymmetric catalysis. However, due to the severely limited numbers of effective organoiodine catalysts, many reactions still give low to modest enantioselectivity. We report herein a solution to this issue through the introduction of a pivotal indanol scaffold to the catalyst design. Our catalyst architecture exhibits