1988
DOI: 10.1002/anie.198816031
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The Chemistry of Amino Imino Boranes

Abstract: Dicoordinated boron compounds can no longer be considered as "exotic" species in boron chemistry: this is proved by the extensive chemistry of bis(dialkylamino)boron( 1 +) ions, alkylidene boranes, and imino boranes. The latter are characterized by high reactivity and chemical versatility. A special position is taken by amino imino boranes, whose chemistry is reported here. The presence of an amino group enhances the reactivity of imino boranes on the one hand and increases their kinetic stability on the other… Show more

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Cited by 103 publications
(45 citation statements)
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“…Stable compounds containing boron with the coordination number 2 can be isolated when the boron atom is protected by sterically demanding groups, as can be seen from the iminoboranes R ± BN ± R', where the BN bond is shielded on both sides by large groups R and R'. [7] However, in transition metal complexes with BO À or BF ligands protection takes place from only one side and perhaps not very effectively. The analogous organic compounds, the boroxanes R ± BO and borthianes R ± BS, are very reactive, and this type of compound is only known in the gas phase, as they trimerize in the condensed phase.…”
Section: Introductionmentioning
confidence: 99%
“…Stable compounds containing boron with the coordination number 2 can be isolated when the boron atom is protected by sterically demanding groups, as can be seen from the iminoboranes R ± BN ± R', where the BN bond is shielded on both sides by large groups R and R'. [7] However, in transition metal complexes with BO À or BF ligands protection takes place from only one side and perhaps not very effectively. The analogous organic compounds, the boroxanes R ± BO and borthianes R ± BS, are very reactive, and this type of compound is only known in the gas phase, as they trimerize in the condensed phase.…”
Section: Introductionmentioning
confidence: 99%
“…Dank dieser engen Verwandtschaft sind solche Verbindungen Gegenstand intensiver experimenteller [1,2] und theoretischer [3] Untersuchungen geworden. Die Chemie von Iminoboranen wurde mehr als zwei Jahrzehnte lang vor allem in den Arbeitsgruppen von Paetzold [1] und Nöth detailliert studiert.…”
unclassified
“…Die Chemie von Iminoboranen wurde mehr als zwei Jahrzehnte lang vor allem in den Arbeitsgruppen von Paetzold [1] und Nöth detailliert studiert. [2] Im Vergleich zur CC-Bindung führt die BNBindung [3] wegen ihrer Polarität und geringeren Stärke allerdings zu einer höheren Reaktivität und thermodynamischen Instabilität von Iminoboranen in Bezug auf die Cyclooligomerisierung. [1,2] Tiefe Temperaturen, hohe Verdünnung und die Gegenwart sterisch anspruchsvoller Substituenten auf beiden Seiten der Dreifachbindung sind im Allgemeinen notwendig, um die ansonsten bevorzugte Cyclisierung zu unterbinden und monomere Verbindungen zu isolieren.…”
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