in diethyl ether addn. of vinylmethylketone to the Co compd. in ether under Ar and stirring at room temp. for 30 min; evapn. (vac.), dissolving in ether, chromy. on Al2O3, elution with ether-hexane, concn., cooling to -78°C, filtn., washing with cold pentane and drying (vac.); elem. anal.;
参考文献
Zeitschrift fuer Naturforschung, B: Chemical Sciences, , vol. 46, # 10 p. 1364 - 1376
