作者:Guoxiong Hua、David B. Cordes、Yang Li、Alexandra M.Z. Slawin、J. Derek Woollins
DOI:10.1016/j.tetlet.2011.04.058
日期:2011.6
new symmetrical spiro heterocycles in 48–76% isolated yields. However, under identical conditions, treating Woollins’ reagent with thiophene-2-carbohydrazide leads to an additional product, 1,3,4-selenadiazole (27% yield) together with the spiro phosphorus heterocycle in 44% yield. Three representative X-ray structures are reported.
2,4-双(苯基)-1,3-二硒二膦2,4-二硒化物(Woollins试剂)在回流的甲苯中与苯甲酰肼反应生成新的对称螺环杂环,分离产率为48-76%。但是,在相同的条件下,用噻吩-2-碳酰肼处理Woollins试剂可得到另一种产物1,3,4-硒代二唑(27%的产率)和螺磷杂环,产率为44%。报告了三个代表性的X射线结构。