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Tris(pentafluorophenyl)borane is a key reagent leading to the concept of frustrated Lewis pairs. The combination of BCF and bulky basic phosphines, such as tricyclohexylphosphine (PCy 3) cleaves H 2: [11] (C 6 F 5) 3 B + PCy 3 + H 2 → (C 6 F 5) 3 BH − + HPCy 3 + Many related phosphines, boranes, and substrates participate in related reactions.
In this reaction, PCy 3 (the Lewis base) and B(C 6 F 5) 3 (the Lewis acid) cannot form an adduct due to the steric hindrance from the bulky cyclohexyl and pentafluorophenyl groups. The proton on the phosphorus and hydride from the borate are now ‘activated’ and can subsequently be ‘delivered’ to an organic substrate, resulting in ...
The [BAr F 4] − anion with four fluorinated aryl groups distributed tetrahedrally about a central boron atom. Tetrakis[3,5-bis(trifluoromethyl)phenyl]borate is an anion with chemical formula [{3,5-(CF 3) 2 C 6 H 3} 4 B] −, which is commonly abbreviated as [BAr F 4] −, indicating the presence of fluorinated aryl (Ar F) groups.
Pentafluorophenyl esters; T. Tris(pentafluorophenyl)borane This page was last edited on 15 April 2024, at 06:55 (UTC). Text is available under the Creative Commons ...
Triphenylborane is made commercially by a process developed by Du Pont for use in its hydrocyanation of butadiene to adiponitrile, a nylon intermediate. Du Pont produces triphenylborane by reacting sodium metal, a haloaromatic (chlorobenzene), and a secondary alkyl borate ester.
In chemistry, the Gutmann–Beckett method is an experimental procedure used by chemists to assess the Lewis acidity of molecular species.Triethylphosphine oxide (Et 3 PO, TEPO) is used as a probe molecule and systems are evaluated by 31 P-NMR spectroscopy.
Bromopentafluorobenzene is an organofluorine compound with the formula C 6 F 5 Br. It is a colorless liquid that is used to prepare pentafluophenyl compounds. These syntheses typically proceed via the intermediacy of C 6 F 5 Li or the Grignard reagent. [1]
Tris(pentafluorophenyl)borane This page was last edited on 4 September 2020, at 12:51 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 ...