Desymmetric Enantioselective Reduction of Cyclic 1,3-Diketones Catalyzed by a Recyclable <i>P</i>-Chiral Phosphinamide Organocatalyst
作者:Xu-Long Qin、Ang Li、Fu-She Han
DOI:10.1021/jacs.1c00277
日期:2021.2.24
The P-stereogenic phosphinamides are a structurally novel skeletal class which has not been investigated as chiral organocatalysts. However, chiral cyclic 3-hydroxy ketones are widely used as buildingblocks in the synthesis of natural products and bioactive compounds. However, general and practical methods for the synthesis of such chiral compounds remain underdeveloped. Herein, we demonstrate that
The selective preparation and Suzuki coupling reactivity of cyclic 1,3-dione derived mono- and ditriflates
作者:Michael C Willis、Christelle K Claverie
DOI:10.1016/s0040-4039(01)00933-9
日期:2001.7
6-di-tert-butyl-4-methylpyridine was found to be a selective reagent system for the conversion of cyclic 1,3-diones to the corresponding monotriflate derivatives. The use of N-(5-chloro-2-pyridyl)triflimide together with KHMDS was selective for the preparation of the corresponding ditriflates. The Suzuki coupling reactivity of both the mono- and ditriflates was also explored.