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Bis(trifluoroacetoxy)borane

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Bis(trifluoroacetoxy)borane Basic information

Product Name:
Bis(trifluoroacetoxy)borane
Synonyms:
  • Bis(trifluoroacetoxy)borane
CAS:
75626-03-8
MF:
C8H15BO5
MW:
202.01
Mol File:
75626-03-8.mol
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Bis(trifluoroacetoxy)borane Usage And Synthesis

Uses

Bis(trifluoroacetoxy)borane is useful as a selective reducing agent, especially in the presence of strong acids.

Synthesis

The Preparative Method of Bis(trifluoroacetoxy)borane involves the treatment of certain complexes of borane, such as Borane-Tetrahydrofuran, Borane-Dimethyl Sulfide, or Borane-Pyridine, with Trifluoroacetic Acid in a suitable solvent such as tetrahydrofuran (THF), dichloromethane, or trifluoroacetic acid. Excess trifluoroacetic acid can be present because the title reagent is stable to protonolysis of the B-H bond.

Precautions

Generated and employed in situ; normally not isolated and stored. Hydrogen is evolved during reagent generation. The reagent causes the cleavage and oligomerization of THF. Thus, the use of borane-THF for reagent generation, or the use of THF as solvent, is not recommended for reactions at temperatures above 25 °C. Use in a fume hood.

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