Synthesis of β-Carbolines through Tetra- n-butylammonium Bromide-Mediated Cycloaromatization Reaction of N-Methylaniline with Tryptophan Derivatives
Wang Zhen, Zhang Ling, Zhang Fugeng, Wang Bin
Chin. J. Org. Chem. . 2019, (8): 2323 -2327 .  DOI: 10.6023/cjoc201903077