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Crystal and molecular structure of: 5-(1-oxoethyl)-1-methyl-2-(5-bromo-6-methoxy-2-naphthyl)-6-oxabicyclo[3.2.1]octan-7-one and 5-(1-oxoethyl)-1-methyl-2-(5-bromo-6-methoxy-2-naphthyl)-6-oxabicyclo[3.2.1]octane

✍ Scribed by Philip J. Cox

Publisher
Springer
Year
1995
Tongue
English
Weight
299 KB
Volume
25
Category
Article
ISSN
1572-8854

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The title compound, C 20 H 13 Br 3 Cl 2 O 2 , arose unexpectedly as the product of a bromination reaction. The bromo substituents at the central C-C single bond are trans to each other ] and the dihedral angle between the mean planes of the aromatic ring systems is 38.28 (10) .

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The title compound, C 29 H 24 Br 2 , has crystallographic twofold rotation symmetry. The Br atom in the 2 position is disordered with the methyl group in the 6 position. The biphenyl bridge bond distance and the torsion angle between the rings are in good agreement with similar previously reported s