Synthesis and Structures of Dimesityldiboranes(4)

Diboriranide σ‐Complexes of d‐ and p‐Block Metals

“…The required 1‐benzyl‐2‐chloro‐1,2‐diduryldiborane(4) 1 was prepared by the surprisingly selective reaction of 1,2‐dichloro‐1,2‐diduryldiborane(4) [21] with one equivalent of benzyl magnesium chloride [22] at −78 °C in 97 % yield. It was characterized by multinuclear NMR spectroscopy and single crystal x‐ray diffraction (see Supporting Info).…”

Synthesis and hydrogenation of polycyclic aromatic hydrocarbon-substituted diborenesviauncatalysed hydrogenative B–C bond cleavage

“…12,22 The precursors 3-Ar are obtained via a three-step procedure by (a) arylation of B 2 X 2 (NMe 2 ) 2 (X = Cl, Br) with LiAr to yield 1-Ar , followed by (b) acidic methanol quenching to yield 2-Ar , and finally (c) bromination to yield 3-Ar (Scheme 1). 25–27 Attempts to synthesise the corresponding diphenanthryl- and dipyrenyldiboranes(4) following the same procedure failed as step (b) was systematically followed by B–B bond cleavage of 2-Ar during workup. Although 2-Ar was detected in the 11 B NMR spectrum of the reaction mixture at ca.…”

Diboriranid σ‐Komplexe von d‐ und p‐Blockmetallen

“…Das benötigte 1‐Benzyl‐2‐chlor‐1,2‐diduryldiboran(4) 1 wurde durch die überraschend selektive Reaktion von 1,2‐Dichlor‐1,2‐diduryldiboran(4) [21] mit einem Äquivalent Benzylmagnesiumchlorid [22] bei −78 °C in 97 % Ausbeute erhalten. Es wurde mithilfe von multinuklearen NMR‐Experimenten und Röntgenbeugung am Einkristall analysiert (siehe Hintergrundinformationen).…”