in neat (no solvent) inert gas; addn. of the Et4Sn at 0 ° C; stirring for 30 min at 40 ° C; addn. of pentane;; crystn. upon cooling to -75 ° C; removal of ClSn(C2H5)3; distillation of the borylethane at 55 ° C/E-3 Torr;;
in dichloromethane (N2); into soln. of B compd. was dropped soln. of Sn compd. within 20 min at -10°C; mixt. was sepd. by fractionated distn. in vac., yielding mixt. of B compds. and sepd. Et3SnCl;
参考文献
Journal of Organometallic Chemistry, , vol. 187, # 3 p. 321 - 329
in diethyl ether (Ar); keeping a mixt. of tin compds. in ether at room temp. for 12 h; distn. in vac. until vapour temp. 78°C, distn. at 50-60°C/1Torr, recrystn. of the residue (hexane, -12°C); elem. anal.;
