Carboxyl-mediated pictet-spengler reaction. Direct synthesis of 1,2,3,4-tetrahydro β-carbolines from tryptamine-2-carboxylic acids.
作者:Krishnaswamy Narayanan、James M Cook
DOI:10.1016/s0040-4039(00)97406-9
日期:1990.1
The Pictet-Spengler condensation of various tryptamine-2-carboxylic acids 1 with carbonyl compounds in benzene/dioxane/trifiuoroacetic acid (Table) with simultaneous loss of carbon dioxide, afforded directly the corresponding 1,2,3,4-tetrahydro β-carbolines 4 in good to excellent yields.
各种色胺2-羧酸1与羰基化合物在苯/二恶烷/三氟乙酸中的Pictet-Spengler缩合反应(表),同时损失了二氧化碳,直接得到相应的1,2,3,4-四氢β-咔啉4优良至极佳的产量。