in diethyl ether react. of CrCl2 and PhMgBr at -10 - -15°C; addn. of benzene-H2O and NaBPh4;; isolation from benzene phase; mole ratio dibenzene-chrome:diphenylbenzene-chrome = 3.2, but depending on solvent and reaction conditions;;
参考文献
Tsutsui, M.; Zeiss, H.
Journal of the American Chemical Society, 1959 , vol. 81, p. 1367 - 1369