A Highly Diastereoselective and Enantioselective Ti(OTos)<sub>2</sub>−TADDOLate-Catalyzed 1,3-Dipolar Cycloaddition Reaction of Alkenes with Nitrones
作者:Kurt V. Gothelf、Ib Thomsen、Karl Anker Jørgensen
DOI:10.1021/ja952726e
日期:1996.1.1
A highly diastereo- and enantioselective metal-catalyzed 1,3-dipolarcycloaddition reaction of 3-((E)-2‘-alkenoyl)-1,3-oxazolidin-2-ones with nitrones has been developed. A series of TiX2−TADDOLate catalysts are investigated for their effects on the rate and diastereo- and enantioselectivities in the 1,3-dipolarcycloaddition reaction of alkenes with nitrones. The TiCl2−TADDOLate catalysts are known