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85874-45-9 - Benzyltriethylammonium borohydride, 96% - Benzyltriethylammonium tetrahydridoborate - B24952 - Alfa Aesar

B24952 Benzyltriethylammonium borohydride, 96%

CAS Number
Benzyltriethylammonium tetrahydridoborate

Size Price ($) Quantity Availability
5g 37.90
25g 155.53
100g 532.00
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Benzyltriethylammonium borohydride, 96%


Chemical Properties

Formula Weight
Melting point
ca 146° dec.
Moisture Sensitive
Souble in Chloroform.


Benzyltriethylammonium borohydride involves in the conversion of alkenes to the anti-Markovnikov alcohols in presence of TMS chloride or TiCl4. It combines with TMS chloride, selectively reduces carboxylic acids to alcohols; esters, lactones, nitro- and chloro-substituents are unaffected. It is used as reducing reagent.


Moisture sensitive. Store away from moisture and oxidizing agents under dry inert gas. Protect from humidity and water. Incompatible with oxidizing agents and moisture.

Literature References

Sundarababu Baskaran; Varsha Gupta; Nallaperumal Chidambaram and Srinivasan Chandrasekaran. A facile conversion of alkenes to alcohols with benzyltriethylammonium borohydride-chlorotrimethylsilane. J. Chem. Soc., Chem. Commun.1989, 903-904.

Mannathusamy Gopalakrishnan; Thirunavukkarasu Anandabaskaran; Purusothaman Sureshkumar; Jayaraman Thanusu; Arumugam K. Kumaran; Vijayakumar Kanagarajan. Phase-transfer catalysis for the synthesis of hydroxylamines from oximes using benzyltriethylammonium borohydride in methanol and under solid-phase conditions. Mendeleev Communications.2006, 16, 50-51.

In the presence of TMS chloride or TiCl4, converts alkenes to the anti-Markovnikov alcohols in good yield: J. Chem. Soc., Chem. Commun., 903 (1989); Tetrahedron Lett., 34, 171 (1993).

In combination with TMS chloride, selectively reduces carboxylic acids to alcohols; esters, lactones, nitro- and chloro-substituents are unaffected: Synth. Commun., 20, 907 (1990). For example and reaction scheme, see 4-Nitrobenzoic acid, A14738. See also Tetra-n-butyl­ammonium borohydride, A17494.

GHS Hazard and Precautionary Statements

Hazard Statements: H261-H314-H318-H302

In contact with water releases flammable gas. Causes severe skin burns and eye damage. Causes serious eye damage. Harmful if swallowed.

Precautionary Statements: P280-P303+P361+P353-P305+P351+P338-P310-P370+P378i-P402+P404

Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. In case of fire: Use for extinction: Fire-extinguishing powder. Store in a dry place. Store in a closed container.

Other References

Hazard Class
Packing Group
Harmonized Tariff Code


  • A14927

    Benzyltrimethylammonium hydroxide, 40% w/w in methanol
  • A16866

    N-Benzylethanolamine, 96%
  • B20812

    Benzyltrimethylammonium hexafluorophosphate, 98%
  • B24443

    Choline hydroxide, 46% w/w aq. soln.
  • B24945

    Benzylurea, 98%

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