(1E,3E,5E)-1,2,3,4,5,6-Hexafluoro-1,6-diphenylhexatriene
The title triene, C(18)H(10)F(6), was prepared via the Pd(0) coupling reaction of (E)-(1,2-difluoro-1, 2-ethenediyl)bis(tributylstannane) with (Z)-beta-iodo-alpha, beta-difluorostyrene in N,N'-dimethylformamide/tetrahydrofuran. The crystal structure shows the product to be the 1E,3E,5E isomer. Due to steric interactions between F atoms, the double bonds are not coplanar. The planes defined by the two terminal double bonds are almost perpendicular.
Swenson
DC
Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA. dale-swenson@uiowa.edu.
Gao
X
Burton
DJ