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Tri-tert-butylphosphine tetrafluoroborate

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Tri-tert-butylphosphine tetrafluoroborate Basic information

Product Name:
Tri-tert-butylphosphine tetrafluoroborate
Synonyms:
  • Tri-t-butylphosphoniumtetrafluoroborate,99%
  • fluoroboric acid tri-tert-butylphosphine adduct
  • tri-tert-butylphosphine fluoroboric acid adduct
  • Tri-tert-butylphosphonium tetrafluoroborate, 97+%
  • Tri-tert-butylphosphonium tetrafluoroborate,99%
  • Tri-tert-butylphosphoniuM tetrafluoroborate, 97+% 1GR
  • Tri-tert-butylphosphine tetrafluoborate
  • Tri-tert-butylphosphoniuM tetr
CAS:
131274-22-1
MF:
C12H28P.BF4
MW:
290.13
EINECS:
672-603-2
Product Categories:
  • P-BF4
  • organometallic complex
  • Basic Phosphine LigandsCatalysis and Inorganic Chemistry
  • Catalysis and Inorganic Chemistry
  • Cross-Coupling
  • Organophosphine salt
  • Ligand
  • Phosphine Ligands
  • Phosphorus Compounds
  • Achiral Phosphine
  • Alkyl Phosphine
Mol File:
131274-22-1.mol
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Tri-tert-butylphosphine tetrafluoroborate Chemical Properties

Melting point:
261 °C(lit.)
storage temp. 
under inert gas (nitrogen or Argon) at 2-8°C
solubility 
Chloroform (Slightly), Dichloromethane (Slightly), Methanol (Slightly)
form 
Crystals and Chunks
color 
White
Water Solubility 
Soluble in methylene chloride and chloroform. Slightly soluble in terahydro furan. Insoluble in hexane, toluene and water.
Sensitive 
Hygroscopic
BRN 
8813613
InChI
InChI=1S/C12H28P.BF4/c1-10(2,3)13(11(4,5)6)12(7,8)9;2-1(3,4)5/h13H,1-9H3;/q2*-1
InChIKey
YSTLBJVHZMEEAC-UHFFFAOYSA-N
SMILES
[P-](C(C)(C)C)(C(C)(C)C)C(C)(C)C.[B-](F)(F)(F)F
CAS DataBase Reference
131274-22-1(CAS DataBase Reference)
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Safety Information

Hazard Codes 
Xn
Risk Statements 
36/37/38-20/21/22
Safety Statements 
22-24/25-36/37/39-26
RIDADR 
UN 1759 8/PG III
WGK Germany 
3
TSCA 
No
HazardClass 
8
PackingGroup 
III
HS Code 
29319090

MSDS

  • Language:English Provider:ACROS
  • Language:English Provider:ALFA
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Tri-tert-butylphosphine tetrafluoroborate Usage And Synthesis

Reaction

  1. Air-stable, non-pyrophoric precursor of the Tri-t-butylphosphine ligand which is used in a variety of catalytic processes.
  2. Ligand for Suzuki cross-couplings.
  3. Ligand for Heck Reactions.
  4. Ligand for Stille Cross-couplings.
  5. Ligand for α-Arylation and vinylation of arylmandelic acid derivatives.
  6. Ligand for direct arylation of hetercycles
  7. Synthesis of benzocyclobutenes by C-H activation.
  8. Cross-coupling of Grignard reagents and aryl bromides.
  9. Palladium catalyzed annulation of haloanilines.
  10. Palladium-Catalyzed Acylation.
  11. Palladium Catalyzed Carbonylative Heck Reaction.
  12. Palladium-catalyzed aminosulfonylation.
  13. Palladium-catalyzed intramolecular C–O bond formation.
  14. Ruthenium-catalyzed cross-coupling of aldehydes with arylboronic acid.



Chemical Properties

white to light yellow crystal powde

Uses

suzuki reaction
Hindered Phosphine salt employed with a Pd(0)-15-membered, triolefinic, macrocyle in Suzuki cross-coupling reactions of aryl bromides and chlorides. Also used in Heck coupling of non-activated vinyl tosylates with electron deficient olefins.
Ligand used in the Pd-catalyzed enantioselective α?arylation of N-boc-pyrrolidine.

Uses

Tri-tert-butylphosphonium Tetrafluoroborate is used in the synthesis of substituted biaryl compounds via palladium catalyzed tandem Heck-direct arylation and tandem- sequential Heck-direct arylation-hydrogenation. Also used in the synthesis of a novel organic dye with fluorenone as conjugation bridge which is used in dye sensitized solar cells.

Preparation

Addition of HBF4 to a solution of tri-tert-butylphosphine in methylene chloride. Separation of the organic layer and removal of the solvent gives analytically pure Tri-tert-butylphosphine tetrafluoroborate.

Application

Tri-tert-butylphosphonium tetrafluoroborate is a ligand used in the palladium-catalyzed enantioselective alfa-arylation of N-boc-pyrrolidine. It is also used with a palladium(0)-15-membered, triolefinic, macrocyle in Suzuki cross-coupling reactions of aryl bromides and chlorides. Further, it is used in the Heck coupling of vinyl tosylates with olefins.

storage

Tri-tert-butylphosphine tetrafluoroborate is indefinitely stable as a solid and in solution and requires no special handling. This compound is considered non-hazardous. Protection from oxygen is required in the presence of the base, as the highly air-sensitive tri-tert-butylphosphine will be formed.

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