反应条件
1: 1.) thiourea, 2.) aq. NaOH / 1.) aq. C2H5OH, reflux, 3 h, 2.) reflux, 2 h 2: p-toluenesulfonic acid / 8 h / Ambient temperature View Scheme
参考文献
Miftakhov, M. S.; Danilova, N. A.; Vel'der, Ya. L.; Sultanmuratova, V. R.; Berg, A. A.; Tolstikov, G. A.
Journal of Organic Chemistry USSR (English Translation), 1988 , vol. 24, p. 1681 - 1685
Zhurnal Organicheskoi Khimii, 1988 , vol. 24, # 9 p. 1864 - 1869