Synthesis of spirocyclic thiazolidinediones using ring-closing metathesis and one-pot sequential ring-closing/cross metathesis
作者:Kalyan Dhara、Sushovan Paladhi、Ganesh Chandra Midya、Jyotirmayee Dash
DOI:10.1039/c0ob01248c
日期:——
by utilizing ring-closing metathesis (RCM). A selective cross metathesis (CM) of N-allyl azaspiro derivatives with different olefins has been demonstrated to prepare substituted azaspiro-[4.4]nonenediones. The X-ray crystal structure of a spirocyclic thiazolidinedione dimer is described, which has been prepared in two steps from thiazolidinedione using a one-pot sequential ring-closing and self metathesis
通过利用闭环复分解反应,报道了一种新的合成螺环噻唑烷二酮的合成途径(RCM)。选择性交叉复分解(厘米) 的 N-烯丙基氮杂螺已经证明具有不同烯烃的衍生物可制备取代的氮杂螺-[4.4]壬烯二酮。螺环的X射线晶体结构噻唑烷二酮 描述了二聚体,它是从 噻唑烷二酮使用一锅顺序闭环和自我置换。交叉复分解与富电子和贫电子的烯烃都能顺利进行。对称的双噻唑烷二酮 螺环系统可以用作 厘米与烯烃的偶合伙伴。已开发出一锅顺序RCM-CM,用于合成取代的螺环化合物。该方法可以快速访问硫杂氮杂[4.4]壬烯 和-[4.5] decene-二酮 由容易获得的起始材料制成的环系统,否则无法获得。