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- W4225087498 abstract "An efficient one-pot synthesis of imidazo[1,2-a]pyridines from 2-bromoazirines and pyridines has been developed. The construction of the bicyclic framework of imidazo[1,2-a]pyridines occurs in two steps through the formation of (2H-azirin-2-yl)pyridinium bromides followed by dehydrobrominative UV light-induced cyclization. The method can also be applied for the synthesis of imidazo[2,1-a]isoquinolines. Unstable in solution, (2H-azirin-2-yl)pyridinium/isoquinolinium bromides were quantitatively converted to stable tetrafluoroborates, which can be cyclized to imidazo[1,2-a]pyridines under UV irradiation in the presence of bromide ions." @default.
- W4225087498 created "2022-04-30" @default.
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- W4225087498 date "2022-04-27" @default.
- W4225087498 modified "2023-10-02" @default.
- W4225087498 title "Synthesis of Imidazo[1,2-<i>a</i>]pyridines via Near UV Light-Induced Cyclization of Azirinylpyridinium Salts" @default.
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- W4225087498 doi "https://doi.org/10.1021/acs.joc.2c00514" @default.
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