4-(N,N-dimethlyamino)pyridine; toluene-4-sulfonic acid; dicyclohexyl-carbodiimide 1) benzene, 4 h, reflux, 2) THF, 30 min at -10 deg C and 24 h at r.t.; Yield given. Multistep reaction;
参考文献
Shin; Takahashi; Yonezawa
Chemical and Pharmaceutical Bulletin, 1990 , vol. 38, # 7 p. 2020 - 2023