Synthese und Struktur von 5,6,11,12-Tetrakis(diisopropylamino)-5,6,11,12-tetra-hydrodibenzo[c,g][1,2,5,6]tetraborocin†

Synthesis and Structure of 5,6,11,12-tetrakis(diisopropylamino)-5,6,11,12-tetrahydrodibenzo[c,g][1,2,5,6]tetraborocine1 Catalytic dimerization of 1,2-bis(diisopropylamino)-1,2-dihydro-1,2-benzodiborete (1) with (phthalocyanine)palladium [Pd(pc)] leads to the eight-membered title compound 2 in 95% yield. An X-ray structure analysis of 2 exhibits a chair conformation for the central C4B4 ring (folding angle along B1B2/B1′B2′ 55.5°).