Synthesis of optically active polyheterocycles containing pyrrolidine, imidazole, and 1,2,3-triazole rings
作者:Aneta Wróblewska、Grzegorz Mlostoń、Heinz Heimgartner
DOI:10.1016/j.tetasy.2015.10.019
日期:2015.12
Optically active polyheterocycles containing pyrrolidine, imidazole, and 1,2,3-triazole units were obtained via a multistep synthesis with the [3+2] cycloaddition of Boc-protected (S)-(pyrrolidin-2-yl) methyl azide with 2-ethynylimidazoles in the presence of CuI (CuAAC reaction) as the key step. Typical for terminal alkynes, the reactions occurred regioselectively and 1,4-disubstituted 1,2,3-triazoles were formed exclusively. The deprotection of the pyrrolidine N-atom was performed by treatment with TFA under standard conditions. (c) 2015 Elsevier Ltd. All rights reserved.