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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 36.10
25g 148.00
100g 652.00
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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-H302-H314-H318

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

Precautionary Statements: P260-P201-P280-P304+P340-P405-P501a

Do not breathe dust/fume/gas/mist/vapours/spray. Obtain special instructions before use. Wear protective gloves/protective clothing/eye protection/face protection. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

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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