反应条件
1: 81 percent / nitric acid (d=1.42), conc. sulphuric acid / 1.) not over 35 deg C; 2.) 30 min, room temp.
2: 53 percent / conc. sulphuric acid, anhydrous chromic acid / H2O / 1.) 20 min, -6 deg C - 0 deg C; 2.) room temp., 3.5 h.
View Scheme
参考文献
Egawa; Kataoka; Shibamori; et al.
Journal of Heterocyclic Chemistry, 1987 , vol. 24, # 1 p. 181 - 185
