4,4'-di-tert-butyl-2,2'-dipyridyl; bis(η4-1,5-cyclooctadiene)-di-μ-methoxy-diiridium(I) in octane T=80°C; 8 h; Title compound not separated from byproducts.;

catalyst:(Ir(COD)OCH3)2/2(4,4'-di-tert-butyl-bipy) in hexane heating in hexane at 25-80°C in the presence of (Ir(OMe)(COD))2/2(4,4'-di-tert-butyl-bipy); (.alpha/β=49/51);