boron trifluoride diethyl etherate in acetonitrile T=-30 - -5°C;
参考文献
Deshpande, Prashant P.; Ellsworth, Bruce A.; Singh, Janak; Denzel, Theodor W.; Lai, Chiajen; Crispino, Gerard; Randazzo, Michael E.; Gougoutas, Jack Z.
Patent: US2004/138439 A1, 2004 ;
Location in patent: Page 17 ;
US 20040138439 A1