192724
Diisobutylaluminum hydride solution
25 wt. % in toluene
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
Recommended Products
form
liquid
Quality Level
reaction suitability
reagent type: reductant
concentration
25 wt. % in toluene
density
0.846 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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General description
Diisobutylaluminum hydride solution is a strong reducing agent used to convert arylpropiolate esters to their propargyl alcohols.
Diisobutylaluminum hydride reducing agent is commonly used for the reduction of an ester to aldehyde.
Diisobutylaluminum hydride reducing agent is commonly used for the reduction of an ester to aldehyde.
Application
Diisobutylaluminum hydride solution (25 wt. % in toluene) has been used for the reduction of imides:
- N
- -(cis-2-Vinylcyclohexyl)succinimide to 1-(cis-2-vinylcyclohexyl)-5-hydroxy-2-pyrrolidinone
- N-(But-4-en-1-y1)-2(E)-(carbethoxymethylidene)-5-oxo-pyrrolidine to N-(but-4-en-1-yl)- 2(E)-(carbethoxymethylidene)-5-hydroxypyrrolidine
- N-(Hept-1-en-4-y1)-2(E)-(carbethoxymethylidene)-5-oxo-pyrrolidine to N-(hept-1-en-4-y1)-2(E)-(carbethoxymethylidene)-5-hydroxypyrrolidine
- N-(cis-2-Vinylcyclohexyl)-2-(carbethoxymethylidene)-5-oxopyrrolidine to rel-(3aR,SS,5aS,SaR)-1( E)-(carbethoxymethylidene)-5-(formyloxy)dodecahydropyrrolo[1,2-a]quinoline
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.
Packaging
The 25 g Sure/Seal™ bottle is recommended as a single-use bottle. Repeated punctures will likely result in decreased performance of product.
Legal Information
Sure/Seal is a trademark of Sigma-Aldrich Co. LLC
Signal Word
Danger
Hazard Statements
Hazard Classifications
Aquatic Chronic 3 - Asp. Tox. 1 - Eye Dam. 1 - Flam. Liq. 2 - Pyr. Liq. 1 - Repr. 2 - Skin Corr. 1B - STOT RE 2 Inhalation - 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 3
Flash Point(F)
39.2 °F - closed cup
Flash Point(C)
4 °C - closed cup
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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The Journal of Organic Chemistry, 46(2), 367-373 (1981)
Chemoselective Reduction of Esters to Aldehydes by Potassium Diisobutyl-t-butoxyaluminum Hydride (PDBBA).
Chae MJ, et al.
Bull. Korean Chem. Soc., 28(12), 2517-2517 (2007)
Damien Webb et al.
Organic letters, 14(2), 568-571 (2011-12-31)
A continuous flow system for the multiparameter (flow rate, temperature, residence time, stoichiometry) optimization of the DIBALH reduction of esters to aldehydes is described. Incorporating an in-line quench (MeOH), these transformations are generally complete in fewer than 60 s. Mixing
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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