SCHEDULED MAINTENANCE
The (ω-dialkylamino)alkyl β-oxoesters (1) undergo photocyclization via remote hydrogen transfer to give the medium-sized azalactones (2) and/or aminolactones (3). Intramolecular electron transfer from nitrogen to the excited carbonyl group of (1) occurs prior to the remote hydrogen transfer.
T. Hasegawa, T. Ogawa, K. Miyata, A. Karakizawa, M. Komiyama, K. Nishizawa and M. Yoshioka, J. Chem. Soc., Perkin Trans. 1, 1990, 901 DOI: 10.1039/P19900000901
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