Formation of new organoselenium heterocycles and ring reduction of 10-membered heterocycles into seven-membered heterocycles
作者:Guoxiong Hua、Amy L. Fuller、Alexandra M.Z. Slawin、J. Derek Woollins
DOI:10.1016/j.poly.2010.12.018
日期:2011.3
phosphorus–selenium heterocycles 1 and 2 with an O–P(Se)–Se–Se–P(Se)–O linkage. Two equivalents of aromatic diol and Woollins’ reagent in refluxing toluene gave seven-membered phosphorus–selenium heterocycles 3 and 4 with an O–P(Se)–O linkage together with 10-membered phosphorus–selenium heterocycles 1 and 2. It was also found that the diphosphorus species O–P(Se)–Se–Se–P(Se)–O rings 1 and 2 could be