Base-Mediated Chemo- and Stereoselective Addition of 5-Aminoindole/Tryptamine and Histamines onto Alkynes
作者:Akhilesh K. Verma、Monika Patel、Megha Joshi、Pravin R. Likhar、Rakesh K. Tiwari、Keykavous Parang
DOI:10.1021/jo402352v
日期:2014.1.3
aliphatic) of 5-aminoindole, tryptamine, and histamine. The stereochemistry of the products was found to be dependent upon reaction time; an increase in reaction time leads to the formation of a mixture of E/Z isomers and the thermodynamically stable E addition product. The chemoselective addition of N-heterocycle 1a onto alkyne over thiophenol 7 and phenol 8 is supported by control experiments. Competitive