cas 165612-94-2, BIS(PENTAFLUOROPHENYL)BORANE

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Articles about 165612-94-2Total 11 be found

Hydroboration of Phosphaalkynes by HB(C6F5)2
The hydroboration of phosphaalkynes with Piers’ borane (HB(C6F5)2) generated unusual phosphaalkenylboranes [RCH=PB(C6F5)2]2that persisted as dimers in both solution and the solid state. These P2B2heterocycles underwent ring opening when subjected to nucleophiles, such as pyridine and tert-butylisocyanide, to yield monomeric phosphaalkenylborane adducts RCH=PB(C6F5)2(L). DFT calculations were performed to probe the nature of the interaction of phosphaalkynes with boranes.
Longobardi, Lauren E.,Johnstone, Timothy C.,Falconer, Rosalyn L.,Russell, Christopher A.,Stephan, Douglas W.
p. 12665 - 12669
(2016)
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Bis(pentafluorophenyl)borane: Synthesis, properties, and hydroboration chemistry of a highly electrophilic borane reagent
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Parks, Daniel J.,Spence, Rupert E. Von H.,Piers, Warren E.
p. 809 - 811
(1995)
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Facile activation of H-H and Si-H bonds by boranes
The borane B(C6F5)3 is a precatalyst for H/Dexchange between H2 and deuterium-labeled silanes (D 3SiPh, D2SiMePh, DSiMe2Ph, DSiEt3). Experimental and DFT studies revea
Nikonov, Georgii I.,Vyboishchikov, Sergei F.,Shirobokov, Oleg G.
p. 5488 - 5491
(2012)
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A hyperbranched polysilane-based, borane cocatalyst for the metallocene-catalyzed polymerization of propylene
The synthesis of a vinyl-terminated, hyperbranched polysilane and the additional hydroboration with bis(pentafluorophenyl) borohydride are reported. Quantitative transformation was proved by 1H NMR and FT-IR analysis. The polymeric borane was t
Schloegl, Martin,Riethmueller, Silke,Troll, Carsten,Moeller, Martin,Rieger, Bernhard
p. 4004 - 4007
(2004)
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Silica Nanopowder Supported Frustrated Lewis Pairs for CO2Capture and Conversion to Formic Acid
Treatment of hydroxylated silica nanopowders S1 and allyl-functionalized silica nanopowders S2 with 3-(diphenylborano)- or 3-bis(pentafluorophenylborano)propyltrimethoxysilane or 2-(diphenylphosphino)- or 2-(dicyclohexylphosphino)ethyltriethoxysilane gene
Erasmus, Elizabeth,Mentoor, Kgauhelo,Niemantsverdriet, J. W. Hans,Swarts, Jannie C.,Twigge, Linette
p. 55 - 69
(2021/01/13)

Bis(pentafluorophenyl)phenothiazylborane-an intramolecular frustrated Lewis pair catalyst for stannane dehydrocoupling
We synthesized a novel Lewis acidic aminoborane containing a phenothiazyl substituent and demonstrated its potential to catalytically promote the dehydrocoupling of tin hydrides. The observed reactivity would imply a homolytic frustrated Lewis pair type mechanism, however computational analysis suggests a heterolytic mechanism for this reaction. This result represents one of the first frustrated Lewis pair systems to dehydrocouple stannanes in a heterolytic fashion.
Bentley, Jordan N.,Caputo, Christopher B.,Pradhan, Ekadashi,Zeng, Tao
supporting information
p. 16054 - 16058
(2020/12/03)

Semihydrogenation of Alkynes Catalyzed by a Pyridone Borane Complex: Frustrated Lewis Pair Reactivity and Boron–Ligand Cooperation in Concert
The metal-free cis selective hydrogenation of alkynes catalyzed by a boroxypyridine is reported. A variety of internal alkynes are hydrogenated at 80 °C under 5 bar H2 with good yields and stereoselectivity. Furthermore, the catalyst described herein enables the first metal-free semihydrogenation of terminal alkynes. Mechanistic investigations, substantiated by DFT computations, reveal that the mode of action by which the boroxypyridine activates H2 is reminiscent of the reactivity of an intramolecular frustrated Lewis pair. However, it is the change in the coordination mode of the boroxypyridine upon H2 activation that allows the dissociation of the formed pyridone borane complex and subsequent hydroboration of an alkyne. This change in the coordination mode upon bond activation is described by the term boron-ligand cooperation.
Wech, Felix,Hasenbeck, Max,Gellrich, Urs
supporting information
p. 13445 - 13450
(2020/09/23)

Selective C?O Bond Cleavage of Sugars with Hydrosilanes Catalyzed by Piers’ Borane Generated In Situ
Described herein is the selective reduction of sugars with hydrosilanes catalyzed by using Piers’ borane [(C6F5)2BH] generated in situ. The hydrosilylative C?O bond cleavage of silyl-protected mono- and disaccharides in the presence of a (C6F5)2BH catalyst, generated in situ from (C6F5)2BOH, takes place with excellent chemo- and regioselectivities to provide a range of polyols. A study of the substituent effects of sugars on the catalytic activity and selectivity revealed that the steric environment around the anomeric carbon (C1) is crucial.
Zhang, Jianbo,Park, Sehoon,Chang, Sukbok
p. 13757 - 13761
(2017/10/09)

CONVERTING LINEAR INTERNAL OLEFINS TO LINEAR ALPHA OLEFINS
Contacting a LIO with a borane isomerization catalyst in a reaction vessel to form a mixture that includes an adduct formed from the LIO and the borane isomerization catalyst, the adduct having an alkyl group bonded to boron at a non-terminal position of the alkyl group, isomerizing the adduct to move the alkyl group bonded to boron to a terminal position of the alkyl group, and dehydroborating the adduct in the presence of a scavenger olefin to form a LAO and a scavenger adduct that is formed from the scavenger olefin and the borane isomerization catalyst.
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(2014/01/17)

Metal-free HB(C6F5)2-catalyzed hydrogenation of unfunctionalized olefins and mechanism study of borane-mediated σ-bond metathesis
Out with the metal: Metal-free hydrogenation of unfunctionalized olefins can be achieved by employing HB(C6F5)2 as the catalyst. The key step in the catalytic reaction is believed to involve a novel borane-mediated σ-bond metathesis, which has been investigated both experimentally and theoretically. Copyright
Wang, Yuwen,Chen, Weiqiang,Lu, Zhenpin,Li, Zhen Hua,Wang, Huadong
supporting information
p. 7496 - 7499
(2013/07/26)

Generation of bis(pentafluorophenyl)borane-dimethyl sulfide complex as a solution of hexane and its application to hydroboration of alk-1-yne with pinacolborane
A solution of bis(pentafluorophenyl)borane-dimethyl sulfide complex in hexane was generated by redistribution between tris(pentafluorophenyl)borane and borane-dimethyl sulfide complex. In the resulting solution a stoichiometric hydroboration of alk-1-yne
Hoshi, Masayuki,Shirakawa, Kazuya,Okimoto, Mitsuhiro
p. 8475 - 8478
(2008/03/13)