Enantioselective 1,3‐dipolar cycloaddition reactions using complexes of (−)‐sparteine
作者:Mirosław Gucma、W. Marek Gołȩbiewski
DOI:10.1002/jhet.5570450130
日期:2008.1
Regio- and stereoselective 1,3-dipolar cycloaddition of nitrile oxides to internal 2-pentenols and α,β-unsaturated esters catalyzed by (−) sparteine-lanthanide complexes affords corresponding 3-aryl-2-isoxazolines with enantioselectivities up to 68% ee.
(-)斯巴甜氨酸-镧系元素络合物催化的腈氧化物与内部2-戊烯醇和α,β-不饱和酯的区域和立体选择性1,3-偶极环加成反应可提供对映体选择性高达68%ee的相应3-芳基-2-异恶唑啉。