Synthesis of 3-fluoroimidazo[1,2-a]pyrimidines and 5-fluoroimidazo[2,1-b][1,3]thiazoles via heterocyclization of (N-heteroarylimino)trifluoropyruvates
摘要:
Synthesis of 3-fluoroimidazo[1,2-a]pyrimidines and 5-fluoroimidazo[2,1-b][1,3]thiazoles was accomplished via triethyl phosphite-induced heterocyclization of the corresponding N-(heteroarylimino)tri-fluoropyruvates. This method provides a convenient approach to synthesize ring-fluorinated fused imidazoles of biological relevance. (C) 2010 Elsevier B.V. All rights reserved.