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- W4368367039 abstract "Synthesizing azoles from ortho-substituted anilines, CO2 and H2 has proved difficult due to the low nucleophilicity of anilines, which hinders their N-formylation, i.e., the first step of the reaction. Herein, we demonstrate that R3SnX Lewis acids (LA), N-methylmorpholine (NMM) or DBU and polyethyleneimine (PEI) or N-formylmorpholine efficiently catalyse the synthesis of benzimidazole and other azoles from ortho-substituted anilines, CO2 and H2 by reductive coupling of CO2 to nucleophilic amine-based solvents, PEI or morpholine, followed by in-situ transfer of the formyl group to the appropriate ortho-substituted aniline. Under these reaction conditions, spontaneous cyclization of the N-formylated intermediate yields the corresponding azole in up to 98% yield." @default.
- W4368367039 created "2023-05-05" @default.
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- W4368367039 date "2023-05-03" @default.
- W4368367039 modified "2023-10-13" @default.
- W4368367039 title "Frustrated Lewis Pairs Catalyse the Solvent‐assisted Synthesis of Azoles from ortho‐Substituted Anilines, CO2 and H2" @default.
- W4368367039 doi "https://doi.org/10.1002/cctc.202300510" @default.
- W4368367039 hasPublicationYear "2023" @default.
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