[3 + 2]-Annulation of Azaoxyallyl Cations and Thiocarbonyls for the Assembly of Thiazolidin-4-ones
作者:Vandana Jaiswal、Biplab Mondal、Kuldeep Singh、Dinabandhu Das、Jaideep Saha
DOI:10.1021/acs.orglett.9b01933
日期:2019.8.2
A base-promoted, efficient [3 + 2] annulation between azaoxyallyl cations and thiocarbonyls is reported for flexible access to highly functionalized thiazolidin-4-one derivatives in good to excellent yields. An intriguing feature of this method is the metal or Lewis acid free late-stage entry of distinct set of functional groups at C2 of thiazolidin-4-ones via substitution of a latent amino functional
据报道,在氮杂烯丙基阳离子和硫代羰基之间碱促进的,有效的[3 + 2]环合反应可灵活地以高产率至优异产率获得高度官能化的噻唑烷丁-4-酮衍生物。该方法的一个吸引人的特征是,通过潜在的氨基官能团的取代,在噻唑烷丁-4-酮的C2处不同组的官能团的无金属或无路易斯酸的后期进入。总体而言,该方法构成了方便地访问该具有医学重要性的支架的通用平台。