Asymmetric metal-catalysed epoxidation of electron-deficient olefins
摘要:
The SYN diastereospecific epoxidation of acyclic beta-hydroxyketones (beta-hydroxyacrylates) and cyclic beta-hydroxyketones using titanium and vanadium catalysts is reported. Some initial results on the asymmetric epoxidation of these systems using the Sharpless titanium-tartrate catalyst are also described.
Asymmetric metal-catalysed epoxidation of electron-deficient olefins
摘要:
The SYN diastereospecific epoxidation of acyclic beta-hydroxyketones (beta-hydroxyacrylates) and cyclic beta-hydroxyketones using titanium and vanadium catalysts is reported. Some initial results on the asymmetric epoxidation of these systems using the Sharpless titanium-tartrate catalyst are also described.
For the first time the rhodium-catalyzed 1,4-addition of organoboranes to hindered Baylis−Hillman adducts, trisubstitutedalkenes, affording highly functionalized alkenes, via addition of the organoboranes and hydroxyelimination, is reported. Moreover, preliminary results have shown that, thanks to the use of a monosubstituted chiral diene ligand, enantio-enriched products were easily accessible, while
On the metal-catalysed epoxidation of electron-deficient olefins
作者:Mark Bailey、István E Markó、W David Ollis
DOI:10.1016/s0040-4039(00)78819-8
日期:1991.6
The SYN diastereoselective epoxidation of beta-hydroxyacrylates and cyclic beta-hydroxyketones using the Sharpless titanium and vanadium catalysts is reported. The first kinetic resolution of these systems is also described.