Skip to Content
Merck
All Photos(1)

Key Documents

View All Documentation

Safety Information

232734

Sigma-Aldrich

R-Alpine-Borane® solution

0.5 M in THF

Synonym(s):

B-Isopinocampheyl-9-borabicyclo[3.3.1]nonane solution

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Empirical Formula (Hill Notation):
C18H31B
CAS Number:
73624-47-2
Molecular Weight:
258.25
MDL number:
MFCD00074776
UNSPSC Code:
12352005
PubChem Substance ID:
24853817
NACRES:
NA.22

form

liquid

optical activity

[α]20/D −3.0°, neat

concentration

0.5 M in THF

density

0.896 g/mL at 25 °C

SMILES string

C[C@H]1[C@@H](C[C@@H]2C[C@H]1C2(C)C)B3[C@@H]4CCC[C@H]3CCC4

InChI

1S/C18H31B/c1-12-16-10-13(18(16,2)3)11-17(12)19-14-6-4-7-15(19)9-5-8-14/h12-17H,4-11H2,1-3H3/t12-,13+,14-,15+,16-,17-/m1/s1

InChI key

VCDGSBJCRYTLNU-PHPOFCCKSA-N

Related Categories

General description

R-Alpine-Borane® is a chiral reducing agent, synthesized from (+)-α-pinene via hydroboration.

Application

R- and S-Alpine-Boranes are used for asymmetric reduction of aldehydes and prochiral ketones.
R-Alpine-Borane® solution may be used to prepare:
  • (R)-5-(Benzyloxy)pent-3-y-2-ol, an intermediate for the stereoselective total synthesis of (-)-stagonolide D.
  • (R)-1-(p-Tolyl)-1-pentyn-3-ol, an intermediate for the enatioselective synthesis of (R)-incrustoporin.
  • N-(tert-Butyloxycarbonyl)-(4S)-[4-2H]-1-L-homoserine tert-butyl ester, an intermediate for synthesizing (4S)-[4-2H]-L-homoserine.

Legal Information

Alpine-Borane is a registered trademark of Merck KGaA, Darmstadt, Germany

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Carc. 2 - Eye Irrit. 2 - Flam. Liq. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Central nervous system, Respiratory system

Supplementary Hazards

EUH019

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

1.4 °F

Flash Point(C)

-17 °C

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

PRTR

Class I Designated Chemical Substances

FSL

Group 4: Flammable liquids
Type 1 petroleums
Hazardous rank II
Water insoluble liquid

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

232734-800ML:4548173121314
232734-100ML:4548173121307
232734-BULK:
232734-VAR:

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
SHBK1156
SHBH1202V
SHBD6994V
SHBB3995
57396MM

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Enantioselective synthesis of (R)-incrustoporin, an antibiotic isolated from Incrustoporia carneola.
Rossi R, et al.
Tetrahedron Asymmetry, 10(6), 1163-1172 (1999)
First stereoselective total synthesis and reconfirmation of absolute structure of nonenolide (-)-stagonolide D.
Kumar AS, et al.
Tetrahedron Letters (2016)
Biosynthesis of 4-Methylproline in Cyanobacteria: Cloning of n osE and n osF Genes and Biochemical Characterization of the Encoded Dehydrogenase and Reductase Activities.
Luesch H, et al.
The Journal of Organic Chemistry, 68(1), 83-91 (2003)
Diisopinocampheylchloroborane, a remarkably efficient chiral reducing agent for aromatic prochiral ketones.
Chandrasekharan J, et al.
The Journal of Organic Chemistry, 50(25), 5446-5448 (1985)
Synlett, 561-561 (1993)
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service