Stereoselective construction of a 5-aza-spiro[2,4]heptane motif via catalytic asymmetric 1,3-dipolar cycloaddition of azomethine ylides and ethyl cyclopropylidene acetate
作者:Tang-Lin Liu、Zhao-Lin He、Hai-Yan Tao、Yue-Peng Cai、Chun-Jiang Wang
DOI:10.1039/c0cc04329j
日期:——
A direct and facile synthesis of highly functional 5-aza-spiro[2,4]heptanes, a valuable structural motif for drug discovery, is developed via catalytic asymmetric 1,3-dipolarcycloaddition of cyclopropylidene acetate and azomethine ylides for the first time.