作者:David Tanner、Peter Somfai
DOI:10.1016/s0040-4020(01)85848-8
日期:1988.1
N-tosyl amides and lactams can be prepared easily and under mild conditions by the inter- or intramolecular condensation of carboxylic acids and secondary sulfonamides. The coupling reagent used is dicyclohexyl-carbodiimide (DCC) in the presence of 4-pyrrolidinopyridine (4-PPY) and the reactions proceed readily, usually in high yield, at room temperature.
N-甲苯磺酰胺和内酰胺可以轻松地在温和条件下通过羧酸和仲磺酰胺的分子间或分子内缩合制备。在4-吡咯烷基二吡啶(4-PPY)存在下,使用的偶联剂是二环己基-碳二亚胺(DCC),该反应在室温下容易进行,通常以高收率进行。