n-butyllithium; boron trifluoride diethyl etherate in tetrahydrofuran; hexane T=-78°C;
参考文献
Butler, Paul I.; Clarke, Trafford; Dell, Colin; Mann, John
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1994 , # 11 p. 1503 - 1508