674648

(S)-(−)-2-Methyl-CBS-oxazaborolidine solution

1 M in THF

• Synonym(s): α,α-Diphenyl-L-prolinol methylboronic acid cycl-amide ester, (S)-1-Methyl-3,3-diphenyl-tetrahydro-pyrrolo[1,2c][1,3,2]oxazaborole, (S)-3,3-Diphenyl-1-methyltetrahydro-3H-pyrrolo[1,2-c][1,3,2]oxazaborole, (S)-Tetrahydro-1-methyl-3,3-diphenyl-1H,3H-pyrrolo[1,2-c][1,3,2]oxazaborole
• Empirical Formula (Hill Notation): C₁₈H₂₀BNO
• CAS Number: 112022-81-8
• Molecular Weight: 277.17
• MDL number: MFCD00078439
• UNSPSC Code: 12352005
• PubChem Substance ID: 24885227
• NACRES: NA.22

Properties

• concentration: 1 M in THF
• refractive index: n20/D 1.460
• density: 0.942 g/mL at 25 °C
• SMILES string: CB1OC([C@@H]2CCCN12)(c3ccccc3)c4ccccc4
• InChI: 1S/C18H20BNO/c1-19-20-14-8-13-17(20)18(21-19,15-9-4-2-5-10-15)16-11-6-3-7-12-16/h2-7,9-12,17H,8,13-14H2,1H3/t17-/m0/s1
• InChI key: VMKAFJQFKBASMU-KRWDZBQOSA-N

Description

Application

CBS Catalysts for Asymmetric Reduction and Asymmetric Synthesis

The CBS (Corey-Bakshi-Shibata) oxazaborolidine catalyst has been 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.

Safety Information

• Pictograms: GHS02,GHS08,GHS05,GHS07
• Signal Word: Danger
• Hazard Statements: H225,H302,H318,H335,H336,H351
• Precautionary Statements: P201 - P210 - P280 - P301 + P312 + P330 - P305 + P351 + P338 + P310 - P308 + P313
• Hazard Classifications: Acute Tox. 4 Oral - Carc. 2 - Eye Dam. 1 - Flam. Liq. 2 - STOT SE 3
• Target Organs: Central nervous system, Respiratory system
• Supplementary Hazards: EUH018,EUH019
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 3
• Flash Point(F): 5.0 °F - closed cup
• Flash Point(C): -15 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves