One-pot synthesis of 5-sulfonamidopyrazole from terminal alkynes, sulfonyl azides and hydrozones
作者:Yao Li、Deng Hong、Yuanxun Zhu、Ping Lu、Yanguang Wang
DOI:10.1016/j.tet.2011.08.067
日期:2011.10
5-Sulfonamidopyrazoles were efficiently synthesized from terminal alkynes, sulfonyl azides and hydrozones. The sequential reaction involves a copper-catalyzed three-component reaction, a Lewis acid-catalyzed electrocyclic reaction and a dehydrogenation.
从末端炔烃,磺酰基叠氮化物和氢zone有效地合成了5-磺酰胺基吡唑。顺序反应包括铜催化的三组分反应,路易斯酸催化的电环反应和脱氢。