G. Mehta et al., SYNTHESIS AND X-RAY CRYSTAL-STRUCTURE OF 1,3,5-TRIS(FLUOREN-9-YLIDENEMETHYL)BENZENE - TOWARDS A C-48-FRAGMENT OF [60]-FULLERENE, Journal of the Chemical Society. Perkin transactions. I, (14), 1995, pp. 1787-1788
Three-fold, stereoselective Wittig reactions between benzene-1,3,5-tri
carbaldehyde 4 and fluoren-9-ylidene(triphenyl)phosphine 5 furnished a
n interesting C-48-hydrocarbqn of C-3 symmetry whose crystal structure
has been determined.