Cationic Terminal Aminoborylene Complexes: Controlled Stepwise Insertion into M[DOUBLE BOND]B and B[DOUBLE BOND]N Double Bonds


  • We thank the EPSRC for funding and for access to the National Mass Spectrometry facility. C.J. would like to acknowledge funding from the ARC.


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One thing leads to another: Reactions of the cationic BN vinylidene analogues 1-[BArF4] (R=Cy, iPr; ArF=3,5-(CF3)2C6H3) towards dicyclohexylcarbodiimide proceed by unprecedented insertion chemistry for terminal borylene complexes. Controlled, stepwise insertion into the Fe[DOUBLE BOND]B and B[DOUBLE BOND]N bonds is demonstrated, sequentially forming four-membered rings linked at a spirocyclic boronium center.