potassium hydroxide; iodine in diethyl ether; dimethyl sulfoxide addn. of C6H5CH(COOC2H5)2 to mixt. of Cr(CO)3-complex/powd. KOH in DMSO (stirring; 20°C, 6 h), diln. with aq. HCl, extn. with Et2O, treating with excess I2 (room temp., 3 h); distn. (reduced pressure); identification by GC and NMR;

potassium hydroxide; iodine in diethyl ether; dimethyl sulfoxide addn. of C6H5CH2CN to mixt. of Cr(CO)3-complex/powd. KOH in DMSO (stirring; 20°C, 1 h), diln. with aq. HCl, extn. with Et2O, treating with excess I2 (room temp., 3 h); distn. (reduced pressure); identification by GC and NMR;

potassium hydroxide; iodine; tetra-n-octylammonium bromide in diethyl ether; benzene addn. of C6H5CH2CN to mixt. of Cr(CO)3-complex/powd. KOH/TOAB in C6H6 (vigorous stirring), warming (70°C, 5 h), evapn. of solvent (reduced pressure), diln. with aq. HCl, extn. with Et2O, treating with excess I2 (room temp., 3 h); distn. (reduced pressure); identification by GC and NMR; overall yield: 71 percent (50:50 ratio);

Yield given. Multistep reaction;

in tetrahydrofuran

in N,N-dimethyl-formamide stirring at room temp. for 24h; removing DMF in vac., addn. of Et2O, filtering over Celite, wahing with Et2O, addn. of iodine, filtering, rotovapping, destilling in vac.;

potassium hydroxide; iodine in diethyl ether; dimethyl sulfoxide addn. of NCCH2COOC2H5 to mixt. of Cr(CO)3-complex/powd. KOH in DMSO (stirring), warming (45°C, 10 h), diln. with aq. HCl, extn. with Et2O, treating with excess I2 (room temp., 3 h); distn. (reduced pressure); identification by GC and NMR;

caesium carbonate; trimethylphosphane in ethylene glycol dimethyl ether; toluene to soln. of Cr-complex, Cs2CO3 and boronic acid in DME catalyst (mixt. of Pd2(dba)3 and toluene soln. of PMe3) added, mixt. stirred under refluxfor 16 h; ether added, soln. washed (aq. NaOH, H2O, brine), dried (MgSO4), concd. (vac.), flash column chromy (eluant: 5percent ether-C6H14); detnd. by elem. anal.;

in methanol boiling;;

potassium hydroxide; iodine; tetra-n-octylammonium bromide in diethyl ether; benzene addn. of C6H5CH2CN to mixt. of Cr(CO)3-complex/powd. KOH/TOAB in C6H6 (vigorous stirring), warming (70°C, 5 h), evapn. of solvent (reduced pressure), diln. with aq. HCl, extn. with Et2O, treating with excess I2 (room temp., 3 h); distn. (reduced pressure); identification by GC and NMR; overall yield: 71 percent (50:50 ratio);