Elemental Iodine or Diphenyl Diselenide in the [Bis(trifluoroacetoxy)iodo]benzene-Mediated Conversion of Alkynes into 1,2-Diketones
作者:Marco Tingoli、Mauro Mazzella、Barbara Panunzi、Angela Tuzi
DOI:10.1002/ejoc.201001232
日期:2011.1
Both elemental iodine and diphenyl diselenides, in the presence of [bis(trifluoroacetoxy)iodo]benzene (PIFA), promote the transformation of internal alkynes into the corresponding 1,2-diketones. The reactions carried out in the presence of iodine unfortunately did not proceed with complete conversion of the starting alkynes. On the other hand, diphenyl diselenide was more efficient and gave satisfactory
在 [双(三氟乙酰氧基)碘] 苯 (PIFA) 存在下,元素碘和二苯基二硒化物均促进内部炔烃转化为相应的 1,2-二酮。不幸的是,在碘存在下进行的反应没有进行起始炔烃的完全转化。另一方面,二苯基二硒化物效率更高,并且以更好的产率将起始炔烃令人满意地转化为 1,2-二酮。通过随后的缩合反应构建相应的喹喔啉衍生物,证实了邻位二羰基化合物的结构。