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Structural assignment of the intramolecular meta photocycloadduct isomers from 4-phenoxybut-1-enes and 3-benzyloxyprop-1-enes by proton NMR spectroscopy

✍ Scribed by D. C. Blakemore; A. Gilbert; A. De Bruyn; D. De Keukeleire; E. Van der Eycken

Publisher: John Wiley and Sons
Year: 1995
Tongue: English
Weight: 597 KB
Volume: 33
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260331104

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✦ Synopsis

Abstract

^1^H NMR data (400 and 500 MHz) are reported for the intramolecular meta photocycloaddition products from 4‐phenoxybut‐1‐enes and 3‐benzyloxyprop‐1‐enes. The structures of these photoproducts, and in particular the discrimination between the 1,6‐ and 7,8‐bridged isomers, are deduced from COSY 45 and 60 experiments and spin‐decoupling techniques.

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