C-o-Arylation

SP2 ary 0 ary c o Aryl carbon atom attached to oxygen atom... 

Ni(cod)2 catalyses direct C-O arylation of 2,3-dihydrolurans by either electron-rich or electron-deficient Grignard reagents, in THF with LiCl as additive and the ligand 2-chloro-l,3-bis (2,6-diisopropylphenyl)-4,5-dihydroimidazole, to form the corresponding homoallylic alcohol in 99% yield and >95 5 (Z E) selectivity. The oxidation of L-lysine and L-ornithine by alkaline diperiodatonickelate(IV) is fractional order in each substrate the rate decreases with increase in concentration of 104 and OH ions and with ionic strength. ... 

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