作者:Renate Kristianslund、Marius Aursnes、Jørn Eivind Tungen、Trond Vidar Hansen
DOI:10.1016/j.tetlet.2016.10.035
日期:2016.11
squaramides were prepared in a straightforward manner and investigated as organocatalysts. The reaction protocol is operationally simple to execute and proceeds with up to 76% enantiomeric excess. Several conditions, additives, catalysts, and substrates have been investigated. The best results were observed with 3-((3,5-bis(trifluoromethyl)phenyl)amino)-4-(((1R,2R)-2-(dipentylamino)cyclohexyl)amino)-cyclobut-3-ene-1
已经广泛研究了烯丙酸的不对称碘代内酯化反应。以一种简单的方式制备了八种不同的手性方酰胺,并作为有机催化剂进行了研究。该反应方案操作简单,易于操作,对映体过量可达76%。已经研究了几种条件,添加剂,催化剂和底物。用3-((3,5-双(三氟甲基)苯基)氨基)-4-((((1 R,2 R)-2-(二戊基氨基)环己基)氨基)-环丁-3-烯观察到了最佳结果-1,2-二酮为催化剂。