3791-79-5

Basic information

• Product Name: 4-methoxy-6-methyl-5,6-dihydropyran-2-one
• Synonyms: 4-methoxy-6-methyl-5,6-dihydropyran-2-one
• CAS NO: 3791-79-5
• Molecular Formula: C₇H₁₀O₃
• Molecular Weight: 142.1525
• Mol File: 3791-79-5.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 289.2 °C at 760 mmHg
• Flash Point: 116.8 °C
• Appearance: /
• Density: 1.09 g/cm³
• Vapor Pressure: 0.00224mmHg at 25°C
• Refractive Index: 1.463
• CAS DataBase Reference: 4-methoxy-6-methyl-5,6-dihydropyran-2-one(CAS DataBase Reference)
• NIST Chemistry Reference: 4-methoxy-6-methyl-5,6-dihydropyran-2-one(3791-79-5)
• EPA Substance Registry System: 4-methoxy-6-methyl-5,6-dihydropyran-2-one(3791-79-5)

Safety Data

• Hazardous Substances Data: 3791-79-5(Hazardous Substances Data)

Usage

General Description

4-methoxy-6-methyl-5,6-dihydropyran-2-one, also known as maltol, is a naturally occurring organic compound often found in the bark of larch tree, pine needles, and roasted malt. It has a sweet, caramel-like odor and is commonly used as a flavoring agent in the food and beverage industry. In addition to its pleasant aroma, maltol also possesses antioxidant properties, making it a popular ingredient in skincare and cosmetic products. It is a white crystalline solid that is soluble in water and is widely used in the production of confectionery, baked goods, and tobacco products as a sweetener and flavor enhancer. Due to its sweet and pleasant fragrance, maltol is also used in the production of perfumes and fragrances.

InChI:InChI=1/C7H10O3/c1-5-3-6(9-2)4-7(8)10-5/h4-5H,3H2,1-2H3

Upstream product

• 672-89-9 4-methoxy-6-methyl-2H-pyran-2-one 
• 85825-79-2 6-methyltetrahydropyran-2,4-dione 
• 67-56-1 methanol 
• 33177-29-6 5,6-dihydro-4-hydroxy-6-methyl-2H-pyran-2-one 
• 74-88-4 methyl iodide 
• 77-78-1 dimethyl sulfate 

Relevant articles and documents

Fundamental insights into the enantioselectivity of hydrogenations on cinchona-modified platinum and palladium

The influence of the configuration at the C8 and C9 positions of cinchona alkaloids was investigated by comparing the efficiency of cinchonidine, cinchonine, and 9-epi-cinchonidine as chiral modifiers. In the hydrogenation of ketones (methyl benzoylformate, ketopantolactone, methylglyoxal dimethylacetal, 2,2,2-trifluoroacetophenone) on Pt, a change in the configuration at C9 did not affect the absolute configuration of the main products; however, the ees and rates dropped significantly. In the hydrogenation of α-functionalized olefins (E-2-methyl-2-hexenoic acid, 2-phenylcinnamic acid, and 4-methoxy-6-methyl-2H-pyran-2-one) on Pd, replacement of cinchonidine or cinchonine by epi-cinchonidine diminished the rates and almost eliminated the enantioselection, indicating that a subtle combination of C8 and C9 configurations is required on Pd. DFT calculations of the adsorption of the modifiers and the nonlinear behavior of modifier mixtures revealed that the lower reaction rates observed for 9-epi-cinchonidine-modified surfaces cannot be related to different adsorption strength of this modifier. Additionally, substrate-modifier docking interactions are presented.

Synthesis of semivioxanthin

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Synthesis of kavain, dihydrokavain, and analogues

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