Synthesis of Mono- and Di-fluorinated Benzimidazoles
摘要:
AbstractThree efficient methods to synthesize mono‐ and di‐fluorinated benzimidazoles are reported. These methods provide 5‐amino‐6‐fluoro‐benzimidazoles (5), 5,7‐difluoro‐benzimidazoles (10), and 6‐fluoro‐benzimidazoles (13) starting from commercially available 1,5‐difluoro‐2,4‐dinitrobenzene (DFDNB), 2,3,4,5‐tetrafluoro‐6‐nitrobenzoic acid (TFNBA), and 2,4‐difluoro‐1‐nitrobenzene (DFNB), respectively.
Synthesis of Mono- and Di-fluorinated Benzimidazoles
摘要:
AbstractThree efficient methods to synthesize mono‐ and di‐fluorinated benzimidazoles are reported. These methods provide 5‐amino‐6‐fluoro‐benzimidazoles (5), 5,7‐difluoro‐benzimidazoles (10), and 6‐fluoro‐benzimidazoles (13) starting from commercially available 1,5‐difluoro‐2,4‐dinitrobenzene (DFDNB), 2,3,4,5‐tetrafluoro‐6‐nitrobenzoic acid (TFNBA), and 2,4‐difluoro‐1‐nitrobenzene (DFNB), respectively.