in diethyl ether refluxed for 4 h; ether layer sepd.; ether removed by distn.; recrystd. (aq.-ethanolic soln. of sodium thiosulphate; then from 90percent mass aq. ethanol); washed (dist. water); dried in vacuo; elem. anal.;
参考文献
Journal of Chemical Thermodynamics, , vol. 16, # 5 p. 423 - 426
