[Ir(C8H12)(OCH3)]2; 4,4'-di-tertbutylpyridine in N-dodecane; xylene (N2); heating mixt. of iridium compd., bipyridine deriv., benzene deriv., dodecane and silylborane deriv. at 80°C for 12 h; cooling to room temp., chromy. (silica gel, diethyl ether in hexane (gradient from 0percent to 5percent)), NMR;

[Ir(C8H12)(OCH3)]2; 4,4'-di-tertbutylpyridine in N-dodecane (N2); heating mixt. of iridium compd., bipyridine deriv., benzene deriv., dodecane and silylborane deriv. at 80°C for 4 h; cooling to room temp., chromy. (silica gel, diethyl ether in hexane (gradient from 0percent to 5percent)), NMR;