Aluminium Chloride–Catalyzed Claisen Rearrangement: Synthesis of Polyheterocycles Containing Oxygen, Nitrogen, and Sulfur
作者:K. C. Majumdar、R. Islam、S. Alam
DOI:10.1080/00397910701820418
日期:2008.2.13
Abstract Synthesis of 1,8‐naphthyridine‐annulated polyheterocycles containingoxygen, nitrogen, and sulfur has been achieved by thionation and sequential Claisen rearrangement of 4‐(4′‐aryloxybut‐2′‐ynyloxy)‐1‐phenyl[1,8]‐naphthyridin‐2‐ones first by heating in 1,2‐dichlorobenzene for 1–2 h and then by anhydrous AlCl3‐catalyzed Claisen rearrangement in dichloromethane for 1 h.