title: 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.
authors.forename: Sébastien
authors.initials: S
authors.lastname: Clément
authors.forename: Laurent
authors.initials: L
authors.lastname: Guyard
authors.forename: Michael
authors.initials: M
authors.lastname: Knorr
authors.forename: Christian
authors.initials: C
authors.lastname: Däschlein
authors.forename: Carsten
authors.initials: C
authors.lastname: Strohmann