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538205

Sigma-Aldrich

Isobutyraldehyde

dry, 98%

Synonym(s):

2-Methylpropanal, 2-Methylpropionaldehyde

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About This Item

Linear Formula:
(CH3)2CHCHO
CAS Number:
78-84-2
Molecular Weight:
72.11
Beilstein:
605330
EC Number:
201-149-6
MDL number:
MFCD00006980
UNSPSC Code:
12352100
PubChem Substance ID:
24878311
NACRES:
NA.22

vapor density

2.5 (vs air)

Quality Level

200

vapor pressure

66 mmHg ( 4.4 °C)

Assay

98%

autoignition temp.

384 °F

expl. lim.

10 %, 25 °F
2 %, 32 °F

refractive index

n20/D 1.374 (lit.)

bp

63 °C (lit.)

mp

−65 °C (lit.)

solubility

60 g/L at 25 °C

density

0.79 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

[H]C(=O)C(C)C

InChI

1S/C4H8O/c1-4(2)3-5/h3-4H,1-2H3

InChI key

AMIMRNSIRUDHCM-UHFFFAOYSA-N

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General description

Isobutyraldehyde is an α,α-disubstituted aldehyde. It is an important raw material for the manufacture of various industrially important chemicals. It may be produced from CO2 and overexpression of ribulose 1,5-bisphosphate carboxylase/oxygenase employing genetically engineered strain of Synechococcus elongatus PCC7942. Enantioenriched γ-nitroaldehydes are obtained from the conjugate addition reaction between isobutyraldehyde with nitroalkenes in the presence of chiral organocatalysts.

Application

Isobutyraldehyde may be used in the synthesis of the following compounds:
  • N-cyclohrxyl-α-dimethylaminoisovalerarnide
  • N′-cyclohexyl-N,N-dimethyl-α-dimethylaminoisovaleramidine
  • α-acetoxy-N-cyclohexylisovaleramide
  • acetic anhydride
  • N-cyclohexyl-a-formyloxyisovaleramide
  • cyclic carbonates
  • hydroxypivaldehyde, which is useful for the preparation of neopentyl glycol (NPG)
It may also be employed for the microbial synthesis of isobutanol.

Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Danger

Hazard Statements

H225,H319

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 2

WGK

WGK 1

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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Enantioselective Michael addition of isobutyraldehyde to nitroalkenes organocatalyzed by chiral primary amine-guanidines.
Avila A, et al.
Tetrahedron Asymmetry, 25(5), 462-467 (2014)
Cross-Aldol condensation of isobutyraldehyde and formaldehyde using phase transfer catalyst.
Hashmi A.
Journal of Saudi Chemical Society (2013)
Reactions of cyclohexylisonitrile and isobutyraldehyde with various nucleophiles and catalysts.
McFarland JW.
The Journal of Organic Chemistry, 28(9), 2179-2181 (1963)
Xiang Liu et al.
Journal of biotechnology, 164(2), 188-195 (2012-09-15)
We have determined the X-ray crystal structures of the NADH-dependent alcohol dehydrogenase LlAdhA from Lactococcus lactis and its laboratory-evolved variant LlAdhA(RE1) at 1.9Å and 2.5Å resolution, respectively. LlAdhA(RE1), which contains three amino acid mutations (Y50F, I212T, and L264V), was engineered
Christine Counet et al.
Journal of agricultural and food chemistry, 50(8), 2385-2391 (2002-04-04)
After vacuum distillation and liquid-liquid extraction, the volatile fractions of dark chocolates were analyzed by gas chromatography-olfactometry and gas chromatography-mass spectrometry. Aroma extract dilution analysis revealed the presence of 33 potent odorants in the neutral/basic fraction. Three of these had
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