Strong-Acid Cation Exchange Resin Catalyzed Synthesis of Bis(indolyl)methanes in Water
Zhang Ruize, Wang Guodong, Li Hongshuang, Duan Guiyun, Wang Kai, Xia Chengcai
Chin. J. Org. Chem. . 2019, (5): 1429 -1435 .  DOI: 10.6023/cjoc201810011