Total Synthesis of (±)-Brazilin Using [4 + 1] Palladium-Catalyzed Carbenylative Annulation
作者:Vanessa Arredondo、Daniel E. Roa、Eugene S. Gutman、Nancy O. Huynh、David L. Van Vranken
DOI:10.1021/acs.joc.9b02343
日期:2019.11.15
in a formal synthesis of (±)-picropodophyllone and a totalsynthesis of (±)-brazilin. All prior syntheses of brazilin have involved a Friedel-Crafts alkylation in the key carbon-carbon bond forming events. The palladium-catalyzed [4 + 1] reaction generates a 1-arylindane with all of the functionalities needed for formation of the indano[2,1-c]chroman ring system of brazilin. The synthesis of (±)-brazilin