50650-75-4

Basic information

• Product Name: 4-Methyl-6-(2,4,4-trimethylpentyl)-2H-pyran-2-one
• Synonyms: 4-Methyl-6-(2,4,4-trimethylpentyl)-2H-pyran-2-one;4-Methyl-6-(2,4,4-trimethylpentyl)-2-Pyrone;Piroctone Related Compound B (25 mg) (4-methyl-6-(2,4,4-trimethylpentyl)-2H-pyran-2-one);Piroctone Related CoMpound B;4-methyl-6-(2,4,4-trimethylpentyl)pyran-2-one
• CAS NO: 50650-75-4
• Molecular Formula: C₁₄H₂₂O₂
• Molecular Weight: 222.32328
• Mol File: 50650-75-4.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 326.4°C at 760 mmHg
• Flash Point: 134.8°C
• Appearance: /
• Density: 0.951g/cm³
• Vapor Pressure: 0.000216mmHg at 25°C
• Refractive Index: 1.474
• Storage Temp.: 2-8°C
• Solubility: Chloroform (Slightly), Ethyl Acetate (Slightly)
• CAS DataBase Reference: 4-Methyl-6-(2,4,4-trimethylpentyl)-2H-pyran-2-one(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Methyl-6-(2,4,4-trimethylpentyl)-2H-pyran-2-one(50650-75-4)
• EPA Substance Registry System: 4-Methyl-6-(2,4,4-trimethylpentyl)-2H-pyran-2-one(50650-75-4)

Safety Data

• Hazardous Substances Data: 50650-75-4(Hazardous Substances Data)

Usage

Uses

4-Methyl-6-(2,4,4-trimethylpentyl)-2H-pyran-2-one is used in the synthesis of antibacterials and antimycotics. Related to Piroctone (P509400), an anti-dandruff agent used in shampoo formulations. Piroctone USP Related Compound B

InChI:InChI=1/C14H22O2/c1-10-6-12(16-13(15)8-10)7-11(2)9-14(3,4)5/h6,8,11H,7,9H2,1-5H3

Upstream product

• 36727-29-4 isononanoyl chloride 
• 924-50-5 Methyl 3,3-dimethylacrylate 

Downstream Products

• 68890-66-4 6-(2,4,4-trimethylpentyl)-1-hydroxy-4-methyl-2(1H)-pyridone 

Relevant articles and documents

Preparation process of pyridinone ethanol amine salt

The invention relates to the technical field of pyridone ethanol amine salt processing, and particularly discloses a pyridone ethanol amine salt preparation process, which comprises: carrying out an acylation reaction, a ring-closure reaction, a hydroxyamination reaction and a salt forming reaction on 3,3-dimethyl acrylate and isononyl chloride to obtain pyridone ethanol amine salt; wherein the acylation reaction is carried out in the presence of a supported catalyst, the supported catalyst comprises an active component and a carrier, the carrier is silica gel, the active component comprises anhydrous aluminum chloride, anhydrous lanthanum chloride and anhydrous lithium perchlorate, and the loading capacity of anhydrous aluminum chloride on the carrier is 7-11 wt%; the loading capacity ofanhydrous lanthanum chloride on the carrier is 3-5 wt%; and the loading capacity of anhydrous lithium perchlorate on the carrier is 0.8-1.5 wt%. According to the preparation process of pyridinone ethanol amine salt, the catalytic Friedel-Crafts acylation reaction is realized, the supported catalyst is convenient to recover, and the activity and selectivity of the supported catalyst are improved.

Preparation method of pyridinone ethanolamine salt

The invention discloses a preparation method of a pyridinone ethanolamine salt. The preparation method comprises the reaction steps of Friedel-Crafts acylation, ring closing, hydroxyamination, salification and the like. According to the preparation method, the pyridinone ethanolamine salt can be efficiently prepared under mild conditions, less reaction materials are consumed, the yield and purityof products obtained in the steps are high, and complex purification steps are not needed.

Two-step method for synthesis of 4-methyl-6-(2,4,4-trimethylpentyl)-2H-Pyran-2-ketone

The invention relates to the technical field of synthesis of chemical intermediates, in particular to a two-step method for the synthesis of 4-methyl-6-(2,4,4-trimethylpentyl)-2H-pyran-2-ketone. The two-step method is a two-step synthesis method, and includes the steps that isononyl chloride and 3,3- dimethacrylate are used as raw materials, and acylation reaction is carried out on a catalyst of anhydrous aluminum trichloride to synthesize 3,7,9,9-tetramethyl-2-decene-5-ketoacid methyl ester; then, under the catalysis of concentrated sulfuric acid, cyclization reaction is carried out with glacial acetic acid, and the product is obtained by purifying. Compared with other process routes, the two-step method is less in reaction steps, high in yield, high in product purity, low in production cost, less in equipment requirements, and is suitable for industrial production.