Chemistry of Borabenzene: Efficient and General Synthesis of New Neutral Borabenzene−Ligand Complexes
摘要:
An array of neutral borabenzene-ligand complexes (ligand = pyridine, 2,6-lutidine, Net(3), PMe(3), CN-t-Bu) have been synthesized in three straightforward steps from commercially available 1-(trimethylsilyl)-1,4-pentadiyne. An X-ray crystal structure of borabenzene-PMe(3) is reported.
BN-Dibenzo[<i>a</i>,<i>o</i>]picenes: Analogues of an Unknown Polycyclic Aromatic Hydrocarbon
作者:Benedikt Neue、Juan F. Araneda、Warren E. Piers、Masood Parvez
DOI:10.1002/anie.201302911
日期:2013.9.16
Whereas the parent hydrocarbon is not readily accessible, several examples of BN substituted‐dibenzo[a,o]picenes can be prepared in two steps from known starting materials. These non‐linear heptacene analogues are water‐stable materials. Their preparation utilizes a potentially general method for preparing extended BN analogues of difficult‐to‐synthesize polycyclic aromatic hydrocarbon frameworks.
The 7-azaindole adduct of borabenzene is unstable, spontaneously undergoing a Diels−Alder type cycloadditive dimerization to provide a novel diboratricyclo barrelene cage.
Novel boratabenzene–phosphole complexes have been prepared and structurally characterized. The electronic communication between the two heterocyclic rings linked by a P–B bond and the aromaticity of these systems were probed using crystallographic and density functional studies.
The reaction of 1-chloro-2-(trimethylsilyl)-1-boracyclohexa-2,5-diene with [nBu4N]CN provides the 1-borabenzonitrile salt [nBu4N][C5H5BCN] which in turn reacts with [Ru4(μ-Cl)4(η-C5Me5)4] to afford the sandwich complex [Ru(η6-C5H5BCN)(η-C5Me5)]. The bonding of 1-borabenzonitrile is discussed with recourse to crystallographic data for [nBu4N][C5H5BCN] and [Ru(η6-C5H5BCN)(η-C5Me5)].
作者:Michael J. D. Bosdet、Cory A. Jaska、Warren E. Piers、Ted S. Sorensen、Masood Parvez
DOI:10.1021/ol070328y
日期:2007.3.1
Phenanthrene analogues with internalized B-N moieties were found to afford blue light emission with good quantum efficiencies, whereas the isomeric species with peripheral B-N moieties displayed only UV emission behavior, like the all-carbon framework.