Synthesis, Characterization of Spirocyclic λ
<sup>3</sup>
‐Iodanes and Their Application to Prepare 4,1‐Benzoxazepine‐2,5‐diones and 1,3‐Diynes
作者:Xu Sun、Xiao‐Qiang Guo、Lian‐Mei Chen、Tai‐Ran Kang
DOI:10.1002/chem.202005124
日期:2021.3
cycloaddition of aza‐oxyallylic cations with ethynylbenziodoxolones for synthesis of new λ3‐iodanes containing spirocyclic 4‐oxazolidinone has been developed. This cyclic λ3‐iodanes display stability in air and excellent solubility in organic solvent. Using them as substrate, both the 4,1‐benzoxazepine‐2,5‐diones and symmetrical 1,3‐diynes derivatives were afforded in high yield under copper(I)‐catalyzed
这里,氮杂oxyallylic阳离子与ethynylbenziodoxolones新λ的合成[3 + 2]环加成3个含螺环-4-恶唑烷酮-iodanes已经研制成功。这种循环λ 3 -iodanes在有机溶剂中,在空气和溶解性优异的显示稳定性。在铜(I)催化条件下,以它们为底物,可以高收率地获得4,1-苯并氮杂卓-2,5-二酮和对称的1,3-二炔衍生物。