Synthesis of tetrasubstituted thiophenes on solid-support using the Gewald reaction
作者:Georgette M Castanedo、Daniel P Sutherlin
DOI:10.1016/s0040-4039(01)01470-8
日期:2001.10
The Gewald reaction was performed on solid support. This reaction combines a ketone or aldehyde, an activated nitrile, and sulfur in the presence of a suitable amine base to make tri- and tetrasubstituted thiophenes. After optimizing conditions for maximum yield and purity, the scope of the reaction was investigated. Finally, this method is highlighted in the synthesis of two biologically relevant
Gewald反应在固体载体上进行。该反应在合适的胺碱的存在下将酮或醛,活化的腈和硫结合以制备三和四取代的噻吩。优化了最大产率和纯度的条件后,研究了反应范围。最后,在两种生物学上相关的化合物的合成中突出了该方法。