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Published in 2023 at "Molecules"
DOI: 10.3390/molecules28052403
Abstract: A small library of 1H-benzo[4,5]imidazo[1,2-c][1,3]oxazin-1-one derivatives was prepared in good to excellent yields, involving a Ag2CO3/TFA-catalyzed intramolecular oxacyclization of N-Boc-2-alkynylbenzimidazole substrates. In all experiments, the 6-endo-dig cyclization was exclusively achieved since the possible 5-exo-dig heterocycle…
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Keywords:
ag2co3 tfa;
dig;
benzo imidazo;
endo dig ... See more keywords