1: conc. HCl / 24 h / Ambient temperature
2: 3.7 g / triethylamine / diethyl ether; various solvent(s) / 4 h
3: 0.5 g / triethylamine / diethyl ether; benzene / 4 h / 20 °C
View Scheme
参考文献
Cromwell, Norman H.; Soriano, David S.; Doomes, Earl
Journal of Organic Chemistry, 1980 , vol. 45, # 24 p. 4983 - 4985