Department of Chemistry, Luoyang Normal College, Luoyang 471022, China;
Department of Chemistry, Luoyang Normal College, Luoyang 471022, China;
Department of Chemistry, Luoyang Normal College, Luoyang 471022, China;
Department of Chemistry, Luoyang Normal College, Luoyang 471022, China;
chiral spiro-cyclopropane skeleton with O-linked derivative; asymmetric tandem reaction; optically active molecule; X-ray crystallography;