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381438

Sigma-Aldrich

Benzaldehyde dimethyl acetal

95%

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Synonym(s):
α,α-Dimethoxytoluene
Linear Formula:
C6H5CH(OCH3)2
CAS Number:
Molecular Weight:
152.19
Beilstein:
2044501
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Quality Level

Assay

95%

refractive index

n20/D 1.493 (lit.)

bp

87-89 °C/18 mmHg (lit.)

density

1.014 g/mL at 25 °C (lit.)

SMILES string

COC(OC)c1ccccc1

InChI

1S/C9H12O2/c1-10-9(11-2)8-6-4-3-5-7-8/h3-7,9H,1-2H3

InChI key

HEVMDQBCAHEHDY-UHFFFAOYSA-N

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General description

Benzaldehyde dimethyl acetal is an organic building block. Pyridinium tosylate-catalyzed acetal exchange reaction between benzaldehyde dimethyl acetal and 6-O-(tert-butyldiphenylsilyl)-1,2-O-isopropylidene-α-D-glucofuranose is reported to afford 3,5-O-benzylidene-1,2-O-isopropylidene-α-D-glucofuranose. The kinetics of the hydrolysis of benzaldehyde dimethyl acetal over amberlite IR-120 has been studied using a circulated batch reactor in dioxane. One-pot tandem conversion of benzaldehydedimethylacetal to trans-1-nitro-2-phenylethylene has been reported.

Application

Benzaldehyde dimethyl acetal is suitable for use in the synthesis of 4,6-dihydroxy sugar, required for the total synthesis of Porphyromonas gingivalis 381 derived lipid A. It may be used in the preparation of 1-O-methyl-2,3-di-O-galloyl-β-D-glucose.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Precautionary Statements

Hazard Classifications

Acute Tox. 4 Oral

WGK

WGK 3

Flash Point(F)

closed cup

Flash Point(C)

closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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T Ogawa et al.
FEMS immunology and medical microbiology, 28(4), 273-281 (2000-07-13)
A synthetic lipid A of Porphyromonas gingivalis strain 381 (compound PG-381), which is similar to its natural lipid A, demonstrated no or very low endotoxic activities as compared to Escherichia coli-type synthetic lipid A (compound 506). On the other hand
K Akerfeldt et al.
Carbohydrate research, 158, 137-145 (1986-12-15)
Pyridinium tosylate-catalyzed acetal exchange between benzaldehyde dimethyl acetal and 6-O-(tert-butyldiphenylsilyl)-1,2-O-isopropylidene-alpha-D-glucofu ranose was investigated as an alternative to the original procedure of Brigl and Grüner (condensation of a D-glucose triol with benzaldehyde under zinc halide catalysis) for synthesis of 3,5-O-benzylidene-1,2-O-isopropylidene-alpha-D-glucofuranose. The
Mesoporous silica with site-isolated amine and phosphotungstic acid groups: a solid catalyst with tunable antagonistic functions for one-pot tandem reactions.
N Raveendran Shiju et al.
Angewandte Chemie (International ed. in English), 50(41), 9615-9619 (2011-09-16)
M Toda et al.
Bioscience, biotechnology, and biochemistry, 65(3), 542-547 (2001-05-02)
The clove ellagitannins and their related polygalloyl-glucoses inhibited maltase activity of rat intestinal alpha-glucosidases. The structure-activity relationship study of those galloylglucoses, varying the extent of galloylation on the glucose core, with the ellagitannins, indicated that an increasing number of galloyl
Kinetics of hydrolysis of benzaldehyde dimethyl acetal over Amberlite IR-120.
Altiokka MR and Hosgun HL.
Industrial & Engineering Chemistry Research, 46(4), 1058-1062 (2007)

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