反应条件
1: 43 percent / 4-MeC6H4SO3H*H2O / 1) 60 deg C, 20 min; 2) room temperature, 1 week 2: 88 percent / 37percent hydrochloric acid / toluene / 0.5 h / Heating View Scheme
参考文献
Katritzky, Alan R.; Rachwal, Stanislaw; Rachwal, Bogumila; Steel, Peter J.
Journal of Organic Chemistry, 1992 , vol. 57, # 18 p. 4925 - 4931