Enantioselective 1,3-dipolar cycloaddition reactions using chiral lanthanide catalysts
作者:W. Marek Gołȩbiewski、Mirosław Gucma
DOI:10.1002/jhet.5570450620
日期:2008.11
Regio- and stereoselective 1,3-dipolar cycloaddition of nitrile oxides to internal 2-pentenols, α,β-unsaturated esters and amides catalyzed by R-(+) BINOL-lanthanide complexes affords corresponding 3-aryl-2-isoxazolines with enantioselectivities up to 89% ee.
R -(+)BINOL-镧系元素配合物催化的腈氧化物与内在的2-戊烯醇,α,β-不饱和酯和酰胺的区域和立体选择性1,3-偶极环加成反应提供了对映选择性最高的相应的3-芳基-2-异恶唑啉到89%ee。