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Synthesis of Mono‐ and Di‐fluorinated Benzimidazoles
Author(s) -
Liang Wu,
Liu Gang
Publication year - 2011
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201190200
Subject(s) - chemistry , nitrobenzene , benzimidazole , combinatorial chemistry , organic chemistry , catalysis
Three 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.
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