Photo-oxygenation of trans anethole (1), the main constituent of anise essential oil, using tetraphenylporphyrine (TPP) as a singlet oxygen sensitizer in chloroform gave 4-methoxybenzaldehyde (p-anisaldhyde) (2), 2-(4-methoxyphenyl)propan-2-ol (3) as well as erythro and threo 1-(4-methoxyphenyl)propane-1,2-diol (4a, 4b). The structures of the photo-oxygenation products were elucidated by spectral means.

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@article{Dawidar04051012,
title = " Photo-Oxygenation of Trans Anethole ",
journal = "International Journal of Science and Engineering Applications (IJSEA)",
volume = "4",
number = "5",
pages = "294-298 ",
year = "2015",
author = " A. Mahmoud Dawidar,M. Mahmoud Abou-Elzahab,M. Abdel-Mogib,Kh. Hussien,M. El-Hoseiny Mostafa ",
}