Synthesis and X-ray crystal structure of 1,3,5-tris(fluoren-9-ylidenemethyl)benzene: towards a C48-fragment of [60]-fullerene
Abstract
Three-fold, stereoselective Wittig reactions between benzene-1, 3, 5-tricarbaldehyde 4 and fluoren-9-ylidene(triphenyl)phosphine 5 furnished an interesting C48-hydrocarbon ofC3symmetry whose crystal structure has been determined.