pyridine; titanium tetrachloride in dichloromethane
T=20°C; 15 h; Yields of byproduct given;
参考文献
Bryce, Martin R.; Davies, Stephen R.; Grainger, Andrew M.; Hellberg, Jonas; Hursthouse, Michael B.; et al.
Journal of Organic Chemistry, 1992 , vol. 57, # 6 p. 1690 - 1696