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Notable solvent effects on the regioselectivity in the Paternò–Büchi reaction of 1,3-dimethylthymine with 4-methoxybenzophenone

Paper ID Volume ID Publish Year Pages File Format Full-Text
28256 44066 2007 4 PDF Available
Title
Notable solvent effects on the regioselectivity in the Paternò–Büchi reaction of 1,3-dimethylthymine with 4-methoxybenzophenone
Abstract

Notable solvent effects on the regioselectivity and the photochemical efficiency were observed in the Paternò–Büchi (PB) reaction of 1,3-dimethylthymine (DMT) with 4-methoxybenzophenone (MBP). As a comparison, photochemical reactions of 4,4′-difluorobenzophenone (DFBP) and benzophenone (BP) with DMT were performed under the same condition. With increasing the proportion of water in the solution, besides the PB reaction, an electron-transfer reaction was observed in the DFBP–DMT system. The PB reaction of BP–DMT system revealed similar effects on the regioselectivity and the efficiency with that of MBP–DMT system, but the latter is more remarkable. The notable solvent effects may be responsible for a strongly solvent-dependent properties of the excited triplet MBP.

Keywords
Paternò–Büchi reaction; Regioselectivity; Solvent effect; Excited triplet state; Benzophenones
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Notable solvent effects on the regioselectivity in the Paternò–Büchi reaction of 1,3-dimethylthymine with 4-methoxybenzophenone
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 187, Issues 2–3, 15 April 2007, Pages 406–409
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
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