methanol in methanol Irradiation (UV/VIS); solid carbene complex is added to an oven-dried Pyrex pressure tube, followed by dry methanol, contents are degassed, purged with Ar, warmed to room temp., purged with CO, pressurized with 50-90 psi CO, irradiated (450 W) for 2 d; monitored by TLC, mixt. is filtered (Celite) to remove carbonyl compound, evapn. in vacuo yields pure organic product;;

methanol; carbon monoxide; sodium hydride in methanol; N,N-dimethyl-formamide Irradiation (UV/VIS); soln. of aminocarbene in DMF is added to NaH at 0°C under Ar; after 10 min benzylbromide is added, stirring for 3 h; resulting intermediate is taken in MeOH, irradn. under 75 psi of CO for 15-24 h;; removing Cr(CO)6 by filtn.; filtrate is concd. in vacuo, dissolved in ether-hexane, photooxidized, filtn., evapn., syn/anti isomers of amino esters separable by radial chromy.; NMR, IR, elem. anal.;

methanol in methanol Irradiation (UV/VIS); solid carbene complex is added to an oven-dried Pyrex pressure tube, followed by dry methanol, contents are degassed, purged with Ar, warmed to room temp., purged with CO, pressurized with 50-90 psi CO, irradiated (450 W) for 2 d; monitored by TLC, mixt. is filtered (Celite) to remove carbonyl compound, evapn. in vacuo yields pure organic product;;