Silver(I)-Catalyzed Tandem Sigamatropic Rearrangement/1,3-H Shift/6π Aza-electrocyclization of <i>N</i>-Propargylic Hydrazones: A Mild Synthetic Route to 1,6-Dihydropyridazines
作者:Zong-Cang Ding、Lu-Chuan Ju、Ying Yang、Xiao-Ming An、Yun-Bing Zhou、Ren-Hao Li、Hai-Tao Tang、Cheng-Ke Ding、Zhuang-Ping Zhan
DOI:10.1021/acs.joc.6b00428
日期:2016.5.6
A highly efficient AgOTf catalyzed [3,3] sigmatropic rearrangement/1,3-H shift/6π aza-electrocyclization cascade reaction of N-propargylic hydrazones has been developed. This method provides a new mild synthetic route to various polysubstituted 1,6-dihydropyridazines including the 3-CF3-substituted ones with high selectivity.
A高效催化的AgOTf [3,3]σ重排/ 1,3--H移位/的6π氮杂electrocyclization级联反应Ñ -propargylic腙已经研制成功。该方法提供了一种新的温和的合成路线,以高选择性合成各种多取代的1,6-二氢哒嗪,包括3-CF 3-取代的。