672-81-1

Basic information

• Product Name: (methoxymethylene)malononitrile
• Synonyms: (methoxymethylene)malononitrile;2-(MethoxyMethylene)Malononitrile;Propanedinitrile, 2-(MethoxyMethylene)-
• CAS NO: 672-81-1
• Molecular Formula: C₅H₄N₂O
• Molecular Weight: 108.09806
• EINECS: 211-597-4
• Mol File: 672-81-1.mol
• Article Data: 2

Chemical Properties

• Melting Point: 93 °C(Solv: ethanol (64-17-5); ligroine (8032-32-4))
• Boiling Point: 299°C at 760 mmHg
• Flash Point: 137.3°C
• Appearance: /
• Density: 1.107g/cm³
• Vapor Pressure: 0.00122mmHg at 25°C
• Refractive Index: 1.459
• CAS DataBase Reference: (methoxymethylene)malononitrile(CAS DataBase Reference)
• NIST Chemistry Reference: (methoxymethylene)malononitrile(672-81-1)
• EPA Substance Registry System: (methoxymethylene)malononitrile(672-81-1)

Safety Data

• Hazardous Substances Data: 672-81-1(Hazardous Substances Data)

Usage

General Description

(Methoxymethylene)malononitrile, also known as MOMM, is a synthetic compound with the chemical formula C5H9NO2. It is a highly toxic substance that is primarily used as a chemical intermediate in the production of pharmaceuticals and agrochemicals. MOMM is a white, crystalline solid that is soluble in organic solvents. It is known for its ability to undergo a variety of chemical reactions, making it valuable in the synthesis of various compounds. However, it is important to handle MOMM with caution, as it can cause severe skin and eye irritation, and is harmful if ingested or inhaled. Additionally, it is flammable and should be stored and handled in a well-ventilated area with appropriate safety precautions in place.

InChI:InChI=1/C5H4N2O/c1-8-4-5(2-6)3-7/h4H,1H3

Upstream product

• 67-56-1 methanol 
• 123-06-8 Ethoxymethylenemalononitrile 
• 77-78-1 dimethyl sulfate 
• 109-77-3 malononitrile 
• 149-73-5 trimethyl orthoformate 

Downstream Products

• 672-25-3 aminomethylene-malononitrile 
• 5515-16-2 2-(methoxyethylidene)propanedinitrile 
• 132039-12-4 <<4,5-diphenyl-3-(1-pyrrolidinyl)-2-thienyl>methylene>propanedinitrile 
• 95017-71-3 1-<4-(ethoxycarbonyl)phenyl>3-(2,2-dicyanovinyl)-4-(N-pyrrolidino)-1,2,5,6-tetrahydropyridine 
• 650628-19-6 (5-amino-1-(2-methoxyphenyl)-1H-pyrazole-4-carbonitrile) 
• 1082745-49-0 5-amino-1-(tetrahydro-2H-pyran-4-yl)-1H-pyrazole-4-carbonitrile 
• 1107008-22-9 5-amino-1-(5-(benzofuran-2-yl)-1-phenyl-1H-pyrazole-3-carbonyl)-1H-pyrazole-4-carbonitrile 
• 1241398-06-0 5-amino-1-(5-(thiophene-2-yl)-1-phenyl-1H-pyrazole-3-carbonyl)-1H-pyrazole-4-carbonitrile 
• 30929-67-0 5-amino-1-cyclopentyl-1H-pyrazole-4-carbonitrile 
• 1350221-90-7 diisopropyl-4,4-dicyano-3-(cyclohexylimino)-5-methoxycyclopent-1-ene-1,2-dicarboxylate 
• 1350221-93-0 dineopantyl-4,4-dicyano-3-(cyclohexylimino)-5-methoxycyclopent-1-ene-1,2-dicarboxylate 
• 1350221-87-2 dimethyl-4,4-dicyano-3-(cyclohexylimino)-5-methoxycyclopent-1-ene-1,2-dicarboxylate 
• 1350221-89-4 diethyl-4,4-dicyano-3-(cyclohexylimino)-5-methoxycyclopent-1-ene-1,2-dicarboxylate 
• 5334-41-8 5-amino-4-cyano-1-methylpyrazole 

Relevant articles and documents

Preparation method and applications of azimsulfuron key intermediate

The present invention provides a preparation method of 1-methyl-4-(2-methyl-2H-tetrazole-5-yl)1H-pyrazole-5-sulfamide. The preparation method comprises that trimethyl orthoformate and malononitrile are adopted as starting raw materials, a three-step reaction is performed to obtain 1-methyl-5-amino-4-(tetrazole-5-yl)pyrazole, the 1-methyl-5-amino-4-(tetrazole-5-yl)pyrazole reacts with dimethylsulfate in the presence of an acid-binding agent to obtain 2-methyl-5-(1-methyl-5-amino-1H-pyrazole-4-yl)-2H-tetrazole, the 2-methyl-5-(1-methyl-5-amino-1H-pyrazole-4-yl)-2H-tetrazole is subjected to a sodium nitrite diazo-reaction under an acid condition, the obtained material reacts with a sodium sulfite-copper chloride-acetic acid mixture, and finally hydrolysis with ammonia is performed to obtain the target product. The present invention further provides a preparation method of azimsulfuron prepared from the 1-methyl-4-(2-methyl-2H-tetrazole-5-yl)1H-pyrazole-5-sulfamide. The preparation method of the present invention has characteristics of short reaction route, environmental protection raw materials, and high yield.