How does boron trifluoride etherate work?
The Lewis acid boron trifluoride etherate has played an important role in organic synthesis. To accomplish the hydroxylation of double bond, cleavage of epoxides, esterification of acids and many cyclization reaction boron trifluoride etherate proved very useful compared to other Lewis acids.
What is bf3 et2o?
Boron trifluoride etherate, strictly boron trifluoride diethyl etherate, or boron trifluoride–ether complex, is the chemical compound with the formula BF3O(C2H5)2, often abbreviated BF3OEt2. The compound is used as a source of boron trifluoride in many chemical reactions that require a Lewis acid.
What is bf3 et2o used for?
Boron trifluoride etherate –alcohol is a very convenient reagent for the esterification of many p-amino benzoic acids, aromatic, heterocyclic and unsaturated acids. In some esterification reactions the use of this reagent provided superior yield compared with other reagents.
Is bf3oet2 a Lewis acid?
Clearly, BF3·OEt2 is the best Lewis acid for this novel Friedel–Crafts reaction, and gives the corresponding ring-opened reaction product 3b in 46% within 6 h in toluene at 60°C (Table 1, entry 8).
What is the formula of boron trifluoride?
BF3
Boron trifluoride/Formula
What is the formula for boron trichloride?
BCl3
Boron trichloride/Formula
How is boron trifluoride etherate formed?
Preparative Methods: BF3·OEt2 is prepared by passing BF3 through anhydrous ether;1a the BF3·MeOH complex is formed from BF3·OET2 and methanol. Purification: oxidation in air darkens commercial boron trifluoride etherate; therefore the reagent should be redistilled prior to use.
What is boron Trisulfide as a formula?
Boron sulfide is the chemical compound with the formula B2S3….Boron sulfide.
| Names | |
|---|---|
| Chemical formula | B2S3 |
| Molar mass | 117.80 g/mol |
| Appearance | colorless crystals |
| Density | 1.55 g/cm3, solid |
What is the formula for phosphorus trichloride?
PCl3
Phosphorus trichloride/Formula
What is the formula for nitrogen trifluoride?
NF3
Nitrogen trifluoride/Formula
What is the molecular shape of boron trifluoride?
trigonal planar
Boron trifluoride bonding. The geometry of the BF 3 molecule is called trigonal planar (see Figure 5). The fluorine atoms are positioned at the vertices of an equilateral triangle. The F-B-F angle is 120° and all four atoms lie in the same plane.
What is the formula for boron trifluoride diethyl etherate?
Infobox references. Boron trifluoride etherate, strictly boron trifluoride diethyl etherate, or boron trifluoride–ether complex, is the chemical compound with the formula BF 3O(C 2H 5) 2, often abbreviated BF 3OEt 2.
What happens when boron trifluoride is mixed with water?
Boron trifluoride reacts with water to give boric acid and fluoroboric acid. The reaction commences with the formation of the aquo adduct, H 2 O−BF 3, which then loses HF that gives fluoroboric acid with boron trifluoride. 4 BF 3 + 3 H 2 O → 3 HBF 4 + B (OH) 3
Why are the bonds shorter in boron trihalides BX 3?
In the boron trihalides, BX 3, the length of the B–X bonds (1.30 Å) is shorter than would be expected for single bonds, and this shortness may indicate stronger B–X π-bonding in the fluoride.