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214965

Sigma-Aldrich

Diisobutylaluminum hydride solution

1.0 M in heptane

Synonym(s):

DIBAL, DIBAL-H

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About This Item

Linear Formula:
[(CH3)2CHCH2]2AlH
CAS Number:
Molecular Weight:
142.22
Beilstein:
4123663
MDL number:
UNSPSC Code:
12352001
PubChem Substance ID:
NACRES:
NA.22

form

liquid

Quality Level

reaction suitability

reagent type: reductant

concentration

1.0 M in heptane

density

0.731 g/mL at 25 °C

SMILES string

CC(C)C[AlH]CC(C)C

InChI

1S/2C4H9.Al.H/c2*1-4(2)3;;/h2*4H,1H2,2-3H3;;

InChI key

AZWXAPCAJCYGIA-UHFFFAOYSA-N

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Application

Diisobutylaluminum hydride (DIBAL-H) is a common reducing agent to reduce aldehydes, ketones, esters, acids and acid chlorides to the corresponding alcohols. Some of the applications are:
  • Synthesis of α-acetoxy ethers by reduction and subsequent acetylation of esters.
  • Synthesis of coniferyl, sinapyl, and p-coumaryl alcohol by selective reduction of corresponding cinnamate esters.
  • Reduction of secondary phosphine oxides (SPOs) to the corresponding phosphines.
  • DIBAL-H can also be used in the hydroalumination of alkene and alkynes.

Used in Pd-catalyzed reductive debromination of secondary alkyl bromides. O-Debenzylation and ring opening of perbenzylated furanosides. Convenient in situ generation of HZrCp2Cl from ZrCp2Cl2 and DIBAL-H.

Signal Word

Danger

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - Asp. Tox. 1 - Eye Dam. 1 - Flam. Liq. 2 - Pyr. Liq. 1 - Skin Corr. 1B - STOT SE 3 - Water-react 1

Target Organs

Central nervous system

Supplementary Hazards

Storage Class Code

4.2 - Pyrophoric and self-heating hazardous materials

WGK

WGK 2

Flash Point(F)

30.2 °F

Flash Point(C)

-1 °C


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