potassium tert-butylate in dichloromethane byproducts: benzophenone; under N2; t-BuOK added to soln. of Ph3BiCl2 and H2NC7H5O (molar ratio 2:1:1) in CH2Cl2; stirred at room temp. for 5 min; benzopinacol (1 equiv.)added; stirred at room temp. for 1 h; solvent evapd.; sepd. by column chromy. (SiO2, CH2Cl2); further sepd. byTLC (SiO2, hexane-ethyl acetate);
参考文献
Bulletin of the Chemical Society of Japan, , vol. 76, # 5 p. 1029 - 1034
