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- W4304128412 abstract "Abstract The novel synthesis of unsymmetrical 1,1’‐bibenzimidazoles is described. The key N−N bond was introduced on 1H ‐benzimidazole or 1H ‐benzimidazole‐2‐sulfonic acid by N‐amination with hydroxylamine‐ O ‐sulfonic acid (HASA). The precursors, 1‐[(2‐nitrophenyl)amino]‐ 1H ‐benzimidazoles, were prepared by nucleophilic aromatic substitution of 1‐fluoro‐2‐nitrobenzene with 1H ‐benzimidazole‐1‐amines. The synthesis was demonstrated on 11 novel 1,1’‐bibenzimidazoles, which were prepared in the final step by one‐pot reduction/cyclization with DMF or DMA acetals under mild acidic conditions in good overall yields." @default.
- W4304128412 created "2022-10-11" @default.
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- W4304128412 date "2022-10-10" @default.
- W4304128412 modified "2023-09-26" @default.
- W4304128412 title "Synthesis of Unsymmetrical 1,1’‐Bibenzimidazoles via an N‐Amination Reaction Forming the Key N‐N Bond" @default.
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- W4304128412 doi "https://doi.org/10.1002/slct.202203144" @default.
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