The synthesis of chromenes, chromanes, coumarins and related heterocycles via tandem reactions of salicylic aldehydes or salicylic imines with alpha,beta-unsaturated compounds.
The tandem reactions of salicylic aldehydes or salicylic imines with alpha,beta-unsaturated compounds have only been studied systematically in recent years. These tandem reactions provide an easy access to a variety of heterocycles, such as chromanes, chromenes, coumarins and tetrahydroxanthenones, many of which are synthetic useful intermediates.
Shi
Yong-Ling
YL
State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai, 200032, China.
Shi
Min
M