反应条件
sulfuric acid; trifluoroacetic anhydride 1) 65 deg C, 3 h, 2) 10 deg C, 2 h; Yield given. Multistep reaction;
参考文献
Journal of Organic Chemistry USSR (English Translation), , vol. 23, # 9 p. 1672 - 1675
Zhurnal Organicheskoi Khimii, , vol. 23, # 9 p. 1882 - 1886