Borane Adducts of Aromatic Phosphorus Heterocycles: Synthesis, Crystallographic Characterization and Reactivity of a Phosphinine‐B(C
<sub>6</sub>
F
<sub>5</sub>
)
<sub>3</sub>
Lewis Pair
作者:Jinxiong Lin、Friedrich Wossidlo.、Nathan T. Coles、Manuela Weber、Simon Steinhauer、Tobias Böttcher、Christian Müller
DOI:10.1002/chem.202104135
日期:2022.2
Roll out the barrelene: The synthesis and crystallographic characterization of a phosphinine–borane adduct has been achieved for the first time. The novel Lewis adduct shows rapid insertion and [4+2] cycloaddition reactivity towards phenylacetylene, whereas a hitherto unknown dihydro-1-phosphabarrelene is formed with styrene. Reaction with an ester provides a new, facile and selective route to 1-R-phosphininium
One-step methylation of aromatic phosphorus heterocycles: synthesis and crystallographic characterization of a 1-methyl-phosphininium salt
作者:Lukas Fischer、Friedrich Wossidlo、Daniel Frost、Nathan T. Coles、Simon Steinhauer、Sebastian Riedel、Christian Müller
DOI:10.1039/d1cc03892c
日期:——
For the first time, the direct synthesis of 1-methyl-phosphininium salts has been achieved by reacting aromatic λ3,σ2-phosphinines with the readily available dimethyl chloronium salt [(CH3)2Cl]+[Al(OTeF5)4]−. The remarkably high electrophilicity of the alkylation reagent in combination with the weakly coordinating pentafluoro-orthotelluratoaluminate anion offers excellent conditions for this one-step
(η<sup>5</sup>-Pentamethylcyclopentadienyl)phosphinine Ruthenium(II) Complexes: η<sup>1</sup>- vs η<sup>6</sup>-Coordination
作者:Nicolas Mézailles、Louis Ricard、François Mathey、Pascal Le Floch
DOI:10.1021/om010215x
日期:2001.7.1
4,5-Dimethyl-2-bromophosphinine reacts with [Ru(eta (5)-C5Me5)(eta (4)-C6H10)Cl], in the presence of AgBF4, to afford depending on the reaction conditions complexes resulting from the substitution of the chloride or the diene ligand. Under the same experimental conditions, reactions with the more sterically hindered 2,6-bis(trimethylsilyl)phosphinines yield the sandwich [Ru(eta (5)-C5Me5)(eta (6)-phosphinine)] [BF4] cationic complexes.