Highly Stereoselective Synthesis of Spiro[cyclopropane-1,4'- pyrazolin-5'-one] Derivertives via Ammonium Ylide
WANG Meng, ZHANG Hui, CHEN Jie, TUN Xiao-Tu, DENG Gong-Mei
Chin. J. Org. Chem. . 2009, (10): 1611 -1616 .