in chlorobenzene stirring under N2 at 40°C for 24 h (TLC monitoring); filtration, washing with MeCN, then with hexane; dissoln. in CH2Cl2, filtration, evapn.; elem. anal.;

in chlorobenzene Rh complex and org. compd. reacted in chlorobenzene at 110°C under N2 for 10 h (molar ratio 1:!); elem. anal.;

acetonitrile in acetonitrile stirring under N2 at room temp. for 1 h; filtration (N2), evapn.;