1: With n-butyllithium in tetrahydrofuran T=-78°C; 0.666667 h; 2: With boric acid trimethyl ester in tetrahydrofuran T=-78 - 20°C; 4 h; 3: With hydrogenchloride; n-butyllithium; water more than 3 stages;
参考文献
Norman, Mark H.; Ognyanov, Vassil I.; Rzasa, Robert M.
Patent: US2006/89360 A1, 2006 ;
Location in patent: Page/Page column 25 ;
US 20060089360 A1
