Synthesis of 3-Benzo[ d]imidazol-2(3 H)-ylidene Substituted Pyrano-[3,2- c]chromen-2-ones via Three-Component Reaction
Xiang Wang, Ping Chen, Sanjun Zhi, Huayou Hu, Yuhe Kan, Guodong Tang, Zaichao Zhang
Chinese Journal of Organic Chemistry . 2021, (3): 1241 -1245 .  DOI: 10.6023/cjoc202008028