Furan Oxidation-Cyclization to Oxazepines: Favoring 7-exo-trig over 6-endo-trig and 5-exo-trig Trajectories
Özet
The sequential oxidation-cyclization of hydroxyaminoalkylfurans to oxazepines is controlled by a regioselective 7-exo-trig cyclization rather than the usually more favorable, 6-endo-trig and 5-exo-trig cyclizations. The key trajectory determinant is the generation of Z-dienones, which place the terminal substituents in close proximity. The versatile furan approach to oxazepines exploits an underdeveloped stereochemical feature allowing an efficient, regioselective, and robust route to variously substituted oxazepines ideal for bioactive discovery.
Atıf için künye
Albayrak Halac, F., Aydın Kandemir, B. N., Seçen, H., Fleming, F. F., & Altundas, R. (2025). Furan Oxidation-Cyclization to Oxazepines: Favoring 7-exo-trig over 6-endo-trig and 5-exo-trig Trajectories. ORGANIC LETTERS, 27(49), 13408–13411. https://doi.org/10.1021/acs.orglett.5c03626
BibTeX
@article{albayrakhalac2025-71420,
author = {Albayrak Halac, Fatma and Aydın Kandemir, Busra Nur and Seçen, Hasan and Fleming, Fraser F. and Altundas, Ramazan},
title = {Furan Oxidation-Cyclization to Oxazepines: Favoring 7-exo-trig over 6-endo-trig and 5-exo-trig Trajectories},
journal = {ORGANIC LETTERS},
year = {2025},
volume = {27},
number = {49},
pages = {13408--13411},
issn = {1523-7060},
doi = {10.1021/acs.orglett.5c03626},
url = {https://akademik.atauni.edu.tr/yayinlar/71420-furan-oxidation-cyclization-to-oxazepines-favoring-7-exo-trig-over-6-endo-trig}
}