Photolysis of bis(methoxyphenyl) methylphosphonates. Their emission spectra and formation of dimethoxybiphenyl and dimethoxy-9,10-dioxaanthracene.-Science-Chemical Encyclopedia-lookchem

Photolysis of bis(methoxyphenyl) methylphosphonates. Their emission spectra and formation of dimethoxybiphenyl and dimethoxy-9,10-dioxaanthracene.
Add time:08/22/2019 Source:sciencedirect.com

Upon UV-irradiation in methanol, bis(methoxyphenyl) methylphosphonates underwent an intramolecular coupling of two methoxyphenyl groups to give dimethoxybiphenyls and dimethoxy-9,10-dioxaanthracenes. The reactivities and fluorescence spectra of the phosphonates were sensitive to the position of the methoxy group. These photo-induced couplings proceed probably through the formation of the two types of singlet intramolecular excimers.

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