in acetone 2 equivalents of dimethyl butynedioate; 20 ° C for 3 d;; filtration and concentration; thin layer chromy. (pentane/acetone =1:1); top major band (major product, elem. anal.), second major band: (C5Me5)2Rh2C4(CO2Me)4 elem. anal., the third band: C5Me5RhC6(CO2Me)6 and then C6(CO2Me)6;;
参考文献
Australian Journal of Chemistry, , vol. 38, p. 273 - 292
in toluene under inert gas, stirring for 4h from -50°C to room temp.; evapn., soln. in toluene/THF, chromy.(Al2O3/5percent H2O, THF), recrystn.(toluene/petroleum ether), elem. anal.;
参考文献
Journal of Organometallic Chemistry, , vol. 345, p. 331 - 340
