Diastereo- and Enantioselective Synthesis of Fluorine Motifs with Two Contiguous Stereogenic Centers
作者:Sudipta Ponra、Wangchuk Rabten、Jianping Yang、Haibo Wu、Sutthichat Kerdphon、Pher G. Andersson
DOI:10.1021/jacs.8b08778
日期:2018.10.24
motifs, in particular, chiral fluorine molecules with two contiguous stereogeniccenters, has attracted much interest in research due to the limited number of methods available for their preparation. Herein, we report an atom-economical and highlystereoselective synthesis of chiral fluorine molecules with two contiguous stereogeniccenters via azabicyclo iridium-oxazoline-phosphine-catalyzed hydrogenation
dialkoxycarbonylation of various aromatic and aliphatic alkynes affording a wide range of 1,4-dicarboxylic acid diesters in high yields and selectivities. Kinetic studies suggest the generation of 1,4-dicarboxylic acid diesters via cascade hydroesterification of the corresponding alkynes. Based on these investigations, the chemo- and regioselectivities of alkyne carbonylations can be controlled as shown by switching