ChemicalBook CAS DataBase List 3-Hydroxy-2-methyl-4H-pyran-4-one

3-Hydroxy-2-methyl-4H-pyran-4-one synthesis

8synthesis methods

Product Name:3-Hydroxy-2-methyl-4H-pyran-4-one
CAS Number:118-71-8
Molecular formula:C6H6O3
Molecular Weight:126.11

Maltol may be produced synthetically starting from kojic acid . Alternatively, it can be isolated from beechwood tar or from extracts of needles from the genus Abies. Commercially available extracts fromAbies balsamea needles, which are also used as flavor and fragrance materials, usually contain 3–8% maltol. It is used in aroma compositions with a caramel note and as a taste intensifier in, for example, fruit flavors (particularly in strawberry flavor compositions).

2-Furanmethanol, 2,5-dihydro-2,3,5-trimethoxy-α-methyl-

67171-01-1
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118-71-8
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Yield:118-71-8 67%

Reaction Conditions:

in sulfuric acid;

Steps:

10 EXAMPLE 10

EXAMPLE 10 2(1-hydroxy ethyl)-2,3,5-trimethoxy-2,5-dihydrofuran (2.30 g, 0.012 moles) was stirred at room temperature for 4 hours in 50 ml of 1N H2SO4. Isolation as described in Example 9 gave 67% assayed yield of pure maltol.

References:

US4126624,1978,A