Coumarin compounds and method for preparing and using the same

摘要

4-Substituted coumarin compounds having the general formula of where R is H, CHO, OCH₃, X, NO₂, an alkyl having C_1-10, -OCH₂O-, an aryl being mono- or poly-substituted with CN or COOCH₃ with the aryl being a phenyl, naphthyl, or azaryl, or a coumarin group that is substituted with R¹, R², R³, R⁴, with R¹, R², R³, and R⁴ being H, an alkyl having C_1-10, X, NO₂, CN, OCH₃, COOCH₃ or OR⁵, R⁵ being H or an alkyl having C_1-10, and X being a halogen.