The effect of charge-transfer complexation/π-stacking interactions in lowering the activation barrier of the Bergman cyclization

Article abstract of DOI:10.1002/ejoc.200400660

To elaborate the concept of weak interactions and their effect on Bergman Cyclization (BC), several 1,2-dikynyl benzenes incorporating various combinations of donor and acceptor units in the two arms of the enediynes were designed and synthesized, and the