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4,12-Bis(2,2-dibromo-vinyl)[2.2]paracyclo-phane.

ABSTRACT: In the title compound, C(20)H(16)Br(4), both vinylic substituents were introduced by a Corey-Fuchs reaction using 4,12-diform-yl[2.2]paracyclo-phane as starting material. The title compound may be used as a valuable precursor for the synthesis of diethyn-yl[2.2]paracyclo-phane. The title mol-ecule is centrosymmetric with a crystallographic center of inversion between the centers of the two phenyl rings. A strong tilting is observed with an inter-planar angle between the best aromatic plane and the vinyl plane of 49.4?(5)°. No significant inter-molecular inter-actions are found in the crystal.

SUBMITTER: Clement S 

PROVIDER: S-EPMC2968423 | biostudies-literature | 2009 Feb

REPOSITORIES: biostudies-literature

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4,12-Bis(2,2-dibromo-vinyl)[2.2]paracyclo-phane.

Clément Sébastien S   Clément Sébastien S   Guyard Laurent L   Knorr Michael M   Däschlein Christian C   Strohmann Carsten C  

Acta crystallographica. Section E, Structure reports online 20090213 Pt 3

In the title compound, C(20)H(16)Br(4), both vinylic substituents were introduced by a Corey-Fuchs reaction using 4,12-diform-yl[2.2]paracyclo-phane as starting material. The title compound may be used as a valuable precursor for the synthesis of diethyn-yl[2.2]paracyclo-phane. The title mol-ecule is centrosymmetric with a crystallographic center of inversion between the centers of the two phenyl rings. A strong tilting is observed with an inter-planar angle between the best aromatic plane and t  ...[more]

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