Total Synthesis of (−)‐Cylindrocyclophane F: A Yardstick for Probing New Catalytic C−C Bond‐Forming Methodologies
作者:Dino Berthold、Bernhard Breit
DOI:10.1002/chem.201804585
日期:2018.11.13
(−)‐cylindrocyclophane F is presented, using a crossolefin metathesis dimerization strategy for construction of the [7,7]‐paracyclophane macrocycle. The synthesis of the dimerization building block includes a Pd‐catalyzed sp3‐sp2 Negishi crosscoupling of a sterically hindered Zn‐reagent with an aromatic triflate, an enantiospecific Zn‐catalyzed sp3‐sp3 crosscoupling of an α‐hydroxy ester triflate with a Grignard