1: 79 percent / trichloroacetic acid / toluene / 10 h / Heating
2: 27 percent / polyphosphoric acid (PPA) / 5 h / 110 °C
View Scheme
参考文献
Smith, James G.; Fogg, Deryn E.; Munday, Ian J.; Sandborn, Richard E.; Dibble, Peter W.
Journal of Organic Chemistry, 1988 , vol. 53, # 13 p. 2942 - 2953
