反应条件
1: 89 percent / toluene-4-sulphonic acid / benzene / 24 h / Heating 2: 1.) pyridine, H2SO4, 2.) aq. HCl / 1.) reflux, 2.5 h, 2.) ethanol, reflux, 3 h View Scheme
参考文献
Sosnovskikh, V. Ya.; Ovsyannikov, I. S.
Journal of Organic Chemistry USSR (English Translation), 1990 , vol. 26, # 10 p. 1801 - 1805
Zhurnal Organicheskoi Khimii, 1990 , vol. 26, # 10 p. 2086 - 2091