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112022-83-0 - (R)-2-Methyl-CBS-oxazaborolidine, 1M soln. in toluene - (R)-3,3-Diphenyl-1-methylpyrrolidino[1,2-c]-1,3,2-oxazaborole - L14582 - Alfa Aesar

L14582 (R)-2-Methyl-CBS-oxazaborolidine, 1M soln. in toluene

CAS Number

Size Price ($) Quantity Availability
1ml 35.90
5ml 75.00
25ml 301.00
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(R)-2-Methyl-CBS-oxazaborolidine, 1M soln. in toluene


Chemical Properties

Formula Weight
Flash Point
Air & Moisture Sensitive
Not miscible or difficult to mix in water.


(R)-2-Methyl-CBS-oxazaborolidine is used in the asymmetric reduction of prochiral ketones. Other applications include the enantioselective synthesis of α-hydroxy acids, α-amino acids, C2 symmetrical ferrocenyl diols, and propargyl alcohols. It is also used in a desymmetrizing reduction leading to (S)-4-hydroxycyclohexenone. It is useful in the production of stereospecific motifs such as α-hydroxy acids, α-amino acids, symmetrical ferrocenyl diols and propargyl alcohols.


Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage. Store under inert gas. It is sensitive to moisture and air. Incompatible with oxidizing agents.

Literature References

Parker, K. A.; Ledeboer, M. W. Asymmetric Reduction. A Convenient Method for the Reduction of Alkynyl Ketones. J. Org. Chem. 1996, 61/span> 3214.

Marcel Hoogenraad.; Guido M Klaus.; Niels Elders.; Simone M Hooijschuur.; Ben McKay.; Alan A Smith.; Eric W.P Damen. Oxazaborolidine mediated asymmetric ketone reduction: prediction of enantiomeric excess based on catalyst structure. Tetrahedron: Asymmetry. 2004, 15 (3), 519-523.

Anhydrous catalyst for CBS reduction reaction. For further information, see (S)-2-Methyl-CBS-oxazaborolidine monohydrate, L09219.

GHS Hazard and Precautionary Statements

Hazard Statements: H225-H302-H333-H315-H361-H336-H373-H304

Highly flammable liquid and vapour. Harmful if swallowed. May be harmful if inhaled. Causes skin irritation. Suspected of damaging fertility or the unborn child. May cause drowsiness or dizziness. May cause damage to organs through prolonged or repeated exposure. May be fatal if swallowed and enters airways.

Precautionary Statements: P210-P260-P301+P310a-P303+P361+P353-P405-P501a

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Do not breathe dust/fume/gas/mist/vapours/spray. IF SWALLOWED: IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Hazard Class
Packing Group
Harmonized Tariff Code


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