bromine in tetrachloromethane dropwise addn. of excess of Br2 to a stirred soln. of Ge-compd. at 0°C under N2, stirring for 5 h; evapn. to dryness and then chromy.;
bromine in tetrachloromethane dropwise addn. of Br2 in CCl4 to a stirred soln. of Ge-compd. at 0°C under N2, stirring for 1 h, then warming to room temp.; evapn. to dryness, recrystn. from hexane or liquid chromy. by medium pressure with hexane/ethylacetate, elem. anal.;
参考文献
Journal of Organometallic Chemistry, , vol. 385, # 2 p. 247 - 254
