boron trifluoride in dichloromethane
T=0 - 5°C; 1 h;
参考文献
Bubel', O. N.; Tishchenko, I. G.; Ptashnikov, Yu. L.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1982 , vol. 18, # 8 p. 773 - 775
Khimiya Geterotsiklicheskikh Soedinenii, 1982 , vol. 18, # 8 p. 1022 - 1024