Development of an Amine-Catalyzed Regioselective Synthesis of Pyrroles
作者:Taban K. K. Kakaawla、Joseph P. A. Harrity
DOI:10.1021/acs.orglett.7b03658
日期:2018.1.5
A regioselective synthesis of pyrroles has been devised through the cycloaddition of 1,3-oxazolium-5-olates and enamines. Product regiochemistry is controlled by the enamine substitution pattern. Moreover, an amine-catalyzed variant of this reaction allows aldehydes to be used directly as substrates for pyrrolesynthesis.
作者:Pat Forgione、Marie-Christine Brochu、Miguel St-Onge、Kris H. Thesen、Murray D. Bailey、François Bilodeau
DOI:10.1021/ja063511f
日期:2006.9.1
Aryl-substituted five-membered heteroaromatics have attracted great interest over the past years due to their presence in a large number of pharmaceuticals and natural products. Recently, an advance in the preparation of these scaffolds was achieved by employing a C-H functionalization strategy. This method allows easy access to these biaryl motifs by precluding the necessity of preparing specific