Borane-tetrahydrofuran Complex丨CAS 14044-65-6

Applications

1. Selective Reducing Agent in Organic Synthesis

Borane-tetrahydrofuran complex丨CAS 14044-65-6 is a powerful hydride donor, commonly used to reduce:

Carboxylic acids to primary alcohols

Esters, amides, nitriles, and lactones

Alkenes and alkynes under hydroboration–oxidation conditions

2. Hydroboration Reactions

Used in hydroboration of alkenes and alkynes to form organoboranes, which can be oxidized to alcohols or converted into other functional groups.

Offers regioselectivity (anti-Markovnikov addition) and stereospecificity (syn-addition).

3. Reagent for Asymmetric Synthesis

Plays a role in the formation of chiral boron complexes in asymmetric reductions or syntheses.

Often used in conjunction with chiral auxiliaries or ligands.

4. Pharmaceutical and Fine Chemical Manufacturing

Used in the synthesis of alcohols, amines, and intermediates for APIs (Active Pharmaceutical Ingredients).

Ideal for manufacturing sensitive molecules due to its mild reaction conditions and selectivity.

5. Polymer and Material Science

Used for the functionalization of polymers, introducing boron-containing groups into macromolecules for further chemical modification or cross-linking.

Benefits

1. High Selectivity

BH₃·THF reduces carboxylic acids directly to primary alcohols without affecting other functional groups, making it highly useful for complex molecules.

2. Mild Reaction Conditions

Operates effectively at room temperature or slightly below, minimizing degradation of sensitive compounds.

3. Convenient Liquid Form

Compared to gaseous borane, the THF complex form is safer to handle and easier to measure or add in lab or industrial settings.

4. Regio- and Stereoselectivity

Facilitates anti-Markovnikov additions with excellent stereoselectivity, which is highly valuable in the synthesis of stereochemically complex molecules.

5. Broad Functional Group Tolerance

Compatible with esters, ethers, and many heterocycles, making it suitable for multistep synthesis and diverse substrate types.

Summary

Borane-tetrahydrofuran complex丨CAS 14044-65-6 is a versatile, selective, and powerful reducing agent, ideal for organic synthesis, hydroboration reactions, and fine chemical production. Its compatibility with a wide range of functional groups and substrates makes it a critical reagent in both laboratory and industrial-scale operations. Although it offers outstanding reactivity and selectivity, careful handling and strict safety protocols are essential due to its reactivity with water and air.