Facile synthesis of thiochromanyl-spirooxindoles via K 2 CO 3 catalyzed tandem sulfa-Michael/Aldol reaction
作者:Zhou Sun、Shuangshang Tian、Shilin Li、Yun Liu、Yuan Zhang、Ying Li
DOI:10.1016/j.tetlet.2017.07.033
日期:2017.8
A facile method for the synthesis of thiochromanyl-spirooxindoles via sulfa-Michael/Aldol reaction of 3-ylideneoxindoles with thiosalicylaldehydes has been developed. This tandem reaction, which tolerates a wide variety of functional groups, furnished diverse substituted functional thiochromanyl-spirooxindoles in up to 90% yields with good diastereoselectivities. Furthermore, the reaction system could
已经开发了一种通过3-亚硝基氧吲哚与硫代水杨醛的磺胺-迈克尔/阿尔道反应合成硫代苯并二氢吡喃基-螺并氧杂多环的简便方法。这种串联反应可耐受多种官能团,可提供高达90%的产率和良好的非对映选择性,从而取代了各种取代的官能团硫代苯并吡喃基-螺并氧杂吲哚。此外,在温和的条件下,该反应体系可以有效地促进至克级。