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214949

Sigma-Aldrich

Diisobutylaluminum hydride solution

1.0 M in cyclohexane

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Synonym(s):
DIBAL, DIBAL-H
Linear Formula:
[(CH3)2CHCH2]2AlH
CAS Number:
1191-15-7
Molecular Weight:
142.22
Beilstein:
4123663
MDL number:
MFCD00008928
UNSPSC Code:
12352001
eCl@ss:
38120609
PubChem Substance ID:
24852856
NACRES:
NA.22

form

liquid

Quality Level

100

reaction suitability

reagent type: reductant

concentration

1.0 M in cyclohexane

density

0.781 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 solution (DIBAL-H) can be used as a reducing agent in the:
  • Hydrogenation of ester modified hydroxyl-terminated polybutadiene (HTPB) using cobalt catalyst.
  • Synthesis of primary 6-OH alcohols by regioselective ring opening of 4,6-benzylidene acetals of hexopyranosides using triphenylcarbenium tetrafluoroborate as a catalyst.
  • Conversion of an ester to alcohol.

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

EUH014

WGK

WGK 3

Flash Point(F)

1.4 °F

Flash Point(C)

-17 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

Certificates of Analysis (COA)

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Triphenylcarbenium Tetrafluoroborate as an Efficient Catalyst in the Regioselective Reductive Ring Opening of Benzylidene Acetals of Carbohydrates
Thota N, et al.
ChemistrySelect, 4(27), 7976-7980 (2019)
Synthesis and transannular Diels-Alder reaction of a cis-trans-trans and a trans-cis-cis 13-membered macrocyclic trienone
Marinier A, et al.
Canadian Journal of Chemistry, 67(10), 1609-1617 (1989)
Determination of the hydrogenation degree of telechelic polybutadiene by 1HNMR
Lira CH, et al.
Magnetic Resonance in Chemistry, 5, 22-22 (2006)
Hidetsura Cho et al.
The Journal of organic chemistry, 75(3), 627-636 (2009-12-31)
A systematic investigation of the reductive ring-expansion reaction of cyclic ketoximes fused to aromatic rings with diisobutylaluminum hydride (DIBALH) is described. This reaction regioselectively afforded a variety of five- to eight-membered bicyclic heterocycles or tricyclic heterocycles containing nitrogen neighboring an
D J Kopecky et al.
The Journal of organic chemistry, 65(1), 191-198 (2000-05-18)
An optimized protocol for the DIBALH reductive acetylation of acyclic esters and diesters is described. This reductive acetylation procedure allows a wide variety of esters to be converted into the corresponding alpha-acetoxy ethers in good to excellent yields. It was
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