Pd-Catalyzed allylic C–H activation to seven-membered <i>N</i>,<i>O</i>-heterocycles
作者:Álvaro Velasco-Rubio、Jesús A. Varela、Carlos Saá
DOI:10.1039/d1cc04056a
日期:——
Pd-catalyzed allylic C–H activation of simple olefins allows an easy entry to seven-membered N,O-heterocycles such as 1,4-benzoxazepines (1,4-BZOs), 1,4-benzodiazepinones (1,4-BZDs) and 1,4-oxazepanes in good to excellent yields. Straightforward derivatization of the olefinated 1,4-BZO shows the synthetic utility of this methodology.
Palladium-Catalyzed [4+2] and [5+2] Annulation for the Synthesis of Tetrahydroquinolines and 1,4-Benzoxazepines
作者:Zhao-Fei Zhang、Yan Zhang、Chun-Lin Zhang、Song Ye
DOI:10.1002/ejoc.202000262
日期:2020.5.29
A general strategy for the synthesis of tetrahydroquinolines and 1,4‐benzoxazepines has been developed via palladium‐catalyzed [4+2] and [5+2] annulations of propargyl carbonates with malonate‐tethered anilines and 2‐aminobenzylic alcohols. A series of six‐ and seven‐membered heterocycles with potential bioactivities was obtained in good to excellent yields.