The cinchona alkaloid squaramide catalyzed asymmetric Pictet–Spengler reaction and related theoretical studies
作者:Liang Qi、Huacui Hou、Fei Ling、Weihui Zhong
DOI:10.1039/c7ob02606d
日期:——
The asymmetricPictet–Spenglerreaction between tryptamine derivatives and aldehydes has been developed with a cinchona alkaloid squaramide as the catalyst, affording the corresponding tetrahedron-β-carbolines in good to excellent yields and ee values. A rational mechanistic pathway has also been proposed based on DFT calculations.