9,10-dihydro-1,4-dimethoxy-5,8-dimethyl-cis-9,10-diphenyl-9,10-anthracenediol, 
a crowned planar 9,10-dihydroanthracene

Krieger, Claus; Wartini, Alexander R.; Neugebauer, Franz A.

doi:10.1107/S0108270198003187

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9,10-dihydro-1,4-dimethoxy-5,8-dimethyl-cis-9,10-diphenyl-9,10-anthracenediol, a crowned planar 9,10-dihydroanthracene

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Krieger, Claus
Department of Organic Chemistry, Max Planck Institute for Medical Research, Max Planck Society;

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Wartini, Alexander R.
Department of Organic Chemistry, Max Planck Institute for Medical Research, Max Planck Society;

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Neugebauer, Franz A.
Department of Organic Chemistry, Max Planck Institute for Medical Research, Max Planck Society;

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Citation

Krieger, C., Wartini, A. R., & Neugebauer, F. A. (1998). 9,10-dihydro-1,4-dimethoxy-5,8-dimethyl-cis-9,10-diphenyl-9,10-anthracenediol, a crowned planar 9,10-dihydroanthracene. Acta Crystallographica, Section C: Crystal Structure Communications, 54(8), 1125-1127. doi:10.1107/S0108270198003187.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002B-2438-0

Abstract

The crystal structure determination of the title compound, C30H28O4, a key intermediate in the preparation of highly functionalized anthracenes, establishes the geometry at the central 9,10-positions to be cis. Owing to the buttressing effect of the methoxy and methyl goups in the peri-1,4,5,8-positions on the central 9,10-substituents, the 9,10-dihydroanthracene framework adopts a planar arrangement and the cis-9,10-phenyl groups assume a perpendicular conformation with regard to this plane.