Cascade reaction synthesis of multisubstituted bicyclic pyridone derivatives
作者:Xuebing Chen、Dandan Zhu、Xiaoying Wang、Shengjiao Yan、Jun Lin
DOI:10.1016/j.tet.2013.08.052
日期:2013.11
An efficient synthesis of novel bicyclic pyridone derivatives via cascade reaction of heterocyclic ketene aminals (HKAs) and 4-arylmethylene-2-phenyloxazol-5(4H)-ones in the presence of acetic acid has been established. Significantly, the protocol affords a straightforward approach to the construction of multisubstituted bicyclic pyridones in which one C–O bond was cleaved and new C–C and C–N bonds