catalyst:(IrOMe(cod))2/4,4'-di-tBu-2,2'-bipy in octane under Ar; (Ir(OMe)(cod))2 (0.015 mmol), 4,4'-di-tert-butyl-2,2'-bipyridine (0.03 mmol), bis(pinacolato)diboron (6.0 mmol) placed in Schlenk tube; octane and ferrocene (2.0 mmol) added; mixt. refluxed at 126°C for 24 h; column chromy. (silica gel, cyclohexane/ethyl acetate);

in n-heptane under dry Ar using standard Schlenk or glove box techniques; soln. of ((C5H4)(BNMe2))2Fe (0.11 mmol) mixed with soln. of bis(pinacolato)diborane(0.11 mmol); refluxed (6 h); dried (vac.); residue extd. into hexane;

in n-heptane under dry Ar using standard Schlenk or glove box techniques; soln. of ((C5H4)(BNMe2))2Fe (0.21 mmol) added to soln. of pinacolborane (0.21 mmol); refluxed (ca. 2 h); dried (vac.); residue extd. into hexane; filtered; solvent removed (vac.);