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.
摘要描述了一种温和而有效的nBu4NBr介导的氧化环芳构化反应,可从易于获得的色
氨酸和醛制备β-咔啉。该反应是实用的,并且允许以克规模合成β-咔啉。一些产物从反应混合物中结晶出来,很容易通过过滤除去,从而无需进行色谱分离。