Cationic half-sandwich yttrium alkyl complexes catalyze the ortho-selective benzylic CH 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.
If you can't find a tool you're looking for, please click the link at the top of the page to "Go to old article view". Alternatively, view our Knowledge Base articles for additional help. Your feedback is important to us, so please let us know if you have comments or ideas for improvement.