Synthesis and Characterization of Substituted(unsubstituted) Benzo[ b](thio)pyran Derivatives
WU Li-Huan* ,1,YANG Ding-Qiao 2,CHEN Nai-Chi, LI Hong-Ying
ZHAI Xiao-Feng,XU Li-Feng 1
Chin. J. Org. Chem. . 2005, (11): 1403 -1405 .