Structure Determination of Photoproducts of Anthracenes with (Arylmethoxymethyl) Sidechains

6533b7d4fe1ef96bd12626f0

RESEARCH PRODUCT

Structure Determination of Photoproducts of Anthracenes with (Arylmethoxymethyl) Sidechains

Silvia Dobis Herbert Meier Herbert Meier Chunmei Gao Dieter Schollmeyer Derong Cao Derong Cao

subject

NMR spectra database Crystallography Chemistry Stereochemistry Organic Chemistry Alkane stereochemistry Regioselectivity Physical and Theoretical Chemistry Conformational isomerism

description

Irradiation of 9-(arylmethoxymethyl)anthracenes 3 leads either to a cyclomer and cyclodimer mixture (3a 4a,5a), to selectively formed dimers (3b 5b), or a selectively formed cyclomer (3c 4c). The [4π+4π]cyclodimerization is under the conditions used a regioselective head-to-tail process. In the crystals of the dimers 5a,b, the sidechains are attached in an antiperiplanar position related to the CC bonds generated in the dimerization. In solutions, however, the structures consist of three rotamers the equilibration of which was studied by temperature-dependent NMR spectra. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)

year	journal	country	edition	language
2007-06-01	European Journal of Organic Chemistry

https://doi.org/10.1002/ejoc.200700140

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