SEARCH

SEARCH BY CITATION

Keywords:

  • alkenes;
  • alkyl pyridines;
  • C[BOND]H alkylation;
  • homogeneous catalysis;
  • yttrium
Thumbnail image of graphical abstract

Cationic half-sandwich yttrium alkyl complexes catalyze the ortho-selective benzylic C[BOND]H addition of dialkyl pyridines to various olefins, such as ethylene, 1-hexene, styrenes, and 1,3-conjugated dienes, to afford new alkylated and allylated pyridine derivatives (see scheme; Cp=C5Me5). A cationic half-sandwich yttrium picolyl species, such as [CpY(2-CH2-6-CH3C5H3N)]+, has been confirmed to be a key active species in this transformation.