A practical synthesis of β-carbolines by tetra-n-butylammonium bromide (TBAB)-mediated cycloaromatization reaction of aldehydes with tryptophan derivatives
作者:Zhen Wang、Zhenzhen Yu、Yao Yao、Yakai Zhang、Xuefeng Xiao、Bin Wang
DOI:10.1016/j.cclet.2019.07.001
日期:2019.8
Abstract A mild and efficient nBu4NBr-mediated oxidative cycloaromatization to prepare β-carbolines from readily available tryptophans and aldehydes is described. The reaction is practical and allows the synthesis of β-carbolines on gram-scale. Some of products crystallized from the reaction mixture and were easily removed by filtration, obviating the need for chromatographic separation.