Dihydropyrrole-3-thiones: one-pot synthesis from propargylamines, acyl chlorides and sodium sulfide
作者:Pavel A. Volkov、Kseniya O. Khrapova、Ekaterina M. Vyi、Anton A. Telezhkin、Ivan A. Bidusenko、Alexander I. Albanov、Elena Yu. Schmidt、Boris A. Trofimov
DOI:10.1039/d3ob01061a
日期:——
An efficient one-pot synthesis of 1,2,5-trisubstituted-1,2-dihydro-3H-pyrrole-3-thiones (up to 91% yield), representatives of essentially new heterocyclic systems, by the successive treatment of available propargylamines with acyl chlorides (PdCl2/CuI/Ph3P/Et3N, toluene, 40–45 °C, 3 h) and sodium sulfide (Na2S·9H2O, EtOH, 20–25 °C, 7 h) has been developed. The synthesis comprises the addition of sulfide
1,2,5-三取代-1,2-二氢-3H-吡咯-3-硫酮的高效一锅合成(产率高达 91%),本质上是新杂环体系的代表,通过连续处理可用的炔丙胺与酰氯(PdCl 2 /CuI/Ph 3 P/Et 3 N,甲苯,40–45 °C,3 h)和硫化钠(Na 2 S·9H 2 O,EtOH,20–25 °C,7 h) 已经开发出来。该合成包括将硫阴离子加成到形成的氨基炔酮上,然后对质子重排加合物进行脱水环化。