acetic anhydride in pyridine 3 h; Ambient temperature;
参考文献
Ganguly, J. K.; Som, U. K.; Haque, K. E.; Dhara, K. P.; Dutta, C. P.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1982 , vol. 21, # 12 p. 1065 - 1066