6342-56-9

Basic information

• Product Name: Methylglyoxal 1,1-dimethyl acetal
• Synonyms: PYRUVIC ALDEHYDE DIMETHYL ACETAL;PYRUVALDEHYDE DIMETHYLACETAL;PYRUVALDEHYDE 1,1-DIMETHYL ACETAL;PYRUVALDEHYDE-1-DIMETHYL ACETAL;Methylglyoxal dimethyl acetal~Pyruvaldehyde dimethyl acetal;PYRUVIC ALDEHYDE DIMETHYL ACETAL, 97+%;PYRUVIC ALDEHYDE DIMETHYL ACETAL 98%;PYRUVIC ALDEHYDE DIMETHYL ACETAL(INTERMEDIATE OF B-CAROTENE)
• CAS NO: 6342-56-9
• Molecular Formula: C₅H₁₀O₃
• Molecular Weight: 118.13
• EINECS: 228-735-4
• Product Categories: ACETYLGROUP;Aldehydes;blocks;BuildingBlocks;ketone;(intermediate of -carotene)
• Mol File: 6342-56-9.mol
• Article Data: 12

Chemical Properties

• Melting Point: -57 °C
• Boiling Point: 143-147 °C(lit.)
• Flash Point: 100 °F
• Appearance: Clear colorless to yellow/Liquid
• Density: 0.976 g/mL at 25 °C(lit.)
• Vapor Pressure: 4.96mmHg at 25°C
• Refractive Index: n20/D 1.398(lit.)
• Storage Temp.: Flammables area
• Water Solubility: MISCIBLE
• BRN: 1560557
• CAS DataBase Reference: Methylglyoxal 1,1-dimethyl acetal(CAS DataBase Reference)
• NIST Chemistry Reference: Methylglyoxal 1,1-dimethyl acetal(6342-56-9)
• EPA Substance Registry System: Methylglyoxal 1,1-dimethyl acetal(6342-56-9)

Safety Data

• Hazard Codes: Xi
• Statements: 10-36/38
• Safety Statements: 26-36-16
• RIDADR: UN 1224 3/PG 3
• WGK Germany: 1
• TSCA: Yes
• HazardClass: 3
• PackingGroup: III
• Hazardous Substances Data: 6342-56-9(Hazardous Substances Data)

Usage

Chemical Properties

clear colorless to yellow liquid

Uses

Different sources of media describe the Uses of 6342-56-9 differently. You can refer to the following data:
1. Pyruvic Aldehyde Dimethyl Acetal is used in the preparation of MCL1 inhibitors S63845 which is tolerable and effective in diverse cancer models. Also, acts as a synthetic reagent for the preparation of 8novel 2,4-disubstituted pyrimidines as potent, selective, and cell-permeable inhibitors of neuronal nitric oxide synthase. Selective inhibition of neuronal nitric oxide synthase is an important therapeutic approach to target neurodegenerative disorders.
2. Methylglyoxal 1,1-dimethyl acetal was used in the synthesis of methylglyoxal via hydrolysis in the presence of H2SO4. It was used to investigate the effects of methylglyoxal-mediated glycation on the structure, thermal stability and enzyme activity of yeast enolase in vivo.

Synthesis Reference(s)

The Journal of Organic Chemistry, 41, p. 2642, 1976 DOI: 10.1021/jo00877a030

InChI:InChI=1/C5H10O3/c1-4(6)5(7-2)8-3/h5H,1-3H3

Upstream product

• 67-56-1 methanol 
• 624-67-9 Propargylic aldehyde 
• 78-98-8 2-oxopropanal 
• 23386-92-7 4-chloromethylene-[1,3]dioxolane 
• 1186-47-6 1,1-dihydroxyacetone 
• 27313-32-2 2,2-dichloropropanal 
• 124-41-4 sodium methylate 
• 18664-32-9 1,3-dimethoxypropan-2-one 
• 96-26-4 dihydroxyacetone 
• 57-48-7 D-Fructose 
• 1401816-27-0 N-trimethoxy-N-methyl-acetamide 
• 917-54-4 methyllithium 
• 75-16-1 methylmagnesium bromide 
• 56-82-6 Glyceraldehyde 

Downstream Products

• 57330-54-8 1,1-Dimethoxy-2-(3'-methylthioanilino)-propan 
• 18744-24-6 (+/-)-Nuciferal 
• 38568-50-2 1-Bromo-1-methoxypropan-2-one 
• 65295-97-8 1-dimethylhydrazone of methylglyoxal 
• 7013-75-4 pyruvaldehyde-2-(4-nitro-phenylhydrazone) 
• 60705-25-1 4,4-dimethoxy-3-oxo-butyric acid methyl ester 
• 35556-25-3 1,1-Dimethoxy-2-(3'-ethylphenylimino)-propan 
• 83323-60-8 10,10-dimethoxy-β-ionone 
• 131242-75-6 [2,2-Dimethoxy-1-methyl-eth-(E)-ylidene]-((S)-1-phenyl-ethyl)-amine 
• 111455-50-6 (3E,5E)-1,1-dimethoxy-6-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3,5-hexadien-2-one 
• 131242-75-6 [2,2-Dimethoxy-1-methyl-eth-(E)-ylidene]-((R)-1-phenyl-ethyl)-amine 
• 112712-28-4 3-hydroxy-4,4-dimethoxy-3-methyl-1-(4-chlorophenyl)-1-butanone 
• 112712-27-3 5-hydroxy-6,6-dimethoxy-5-methyl-1-phenyl-3-hexanone 
• 13040-58-9 7-methylpterin 

Relevant articles and documents

Preparation method of pyruvic aldehyde glycol

The invention relates to a method for preparing pyruvic aldehyde glycol, which comprises the following step of: reacting 1, 3-dihydroxy acetone with alcohol in the presence of a catalyst to obtain the pyruvic aldehyde glycol.

Synthesis of Sn-Beta with Exclusive and High Framework Sn Content

Sn-Beta zeolite was prepared by acid dealumination of Beta zeolite, followed by dehydration and impregnation with anhydrous SnCl4. The formation of extraframework Sn (EFSn) species was prevented by the removal of unreacted SnCl4 in a methanol washing step prior to calcination. The resulting Sn-Beta zeolites were characterized by X-ray diffraction, Ar physisorption, NMR, UV/Vis, and FTIR spectroscopy. These well-defined Lewis acid zeolites exhibit good catalytic activity and selectivity in the conversion of 1,3-dihydroxyacetone to methyl lactate. Their performance is similar to a reference Sn-Beta zeolite prepared by hydrothermal synthesis. Sn-BEA zeolites that contain EFSn species exhibit lower catalytic activity; the EFSn species also catalyze formation of byproducts. DFT calculations show that partially hydrolyzed framework Sn-OH species (open sites), rather than the tetrahedral framework Sn sites (closed sites), are the most likely candidate active sites for methyl lactate formation.

Efficient preparation of α-ketoacetals

The Weinreb amides 2a,b were prepared from the a,a-dimethoxyacetic acids 1c,d. A number of representative nucleophilic additions (RMgX and RLi) on 2 afforded a-ketoacetals 3a-j in 70-99% yield. These compounds represent a versatile arrangement of functional groups of significant synthetic value, as demonstrated in the synthesis of (±)-salbutamol.