A selective asymmetrichydrogenation of enones has been well established by using an iridium complex composed of cheap phosphine ligands and cinchona alkaloids derivatives as catalyst. A wide range of allylic alcohol products could be obtained in high chemoselectivities (up to 99.6%), enantioselectivities (70.1% ee) and high activities (up to 3.64×104(1/h) TOF). This catalytic system opens a new way
Palladium-catalyzed stereospecific cross-coupling of enantioenriched allylic alcohols with boronic acids
作者:Hai-Bian Wu、Xian-Tao Ma、Shi-Kai Tian
DOI:10.1039/c3cc45772a
日期:——
In the presence of 2.5 mol% Pd2(dba)3–TMEDA (1 : 4), a range of enantioenriched allylic alcohols smoothly coupled with boronic acids in a highly regioselective fashion with inversion of configuration to afford structurally diverse alkenes in good yields with perfect retention of ee.