265097-83-4

Upstream product

• 100-63-0 phenylhydrazine 
• 265097-73-2 1-(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)-3-dimethylamino-2-propene-1-one 
• 771-03-9 3-acetyl-4-hydroxy-6-methyl-2H-pyran-2-one 
• 520-45-6 Dehydracetic acid 
• 29214-73-1 6-methyl-3-[1-(phenyl-hydrazono)-ethyl]-pyran-2,4-dione 
• 68-12-2 N,N-dimethyl-formamide 
• 265097-79-8 1-(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)-3-ethylamino-2-propene-1-one 

Relevant academic research and scientific papers

Synthesis of some new 1-aryl-4-formyl-3-(4-hydroxy-6-methyl-2-oxo-2H-pyran- 3-yl)pyrazoles using the Vilsmeier-Haack reaction - Isolation of the key intermediate 1-aryl-3-(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl) pyrazoles

Arylhydrazones of dehydroacetic acid (DHA) underwent Vilsmeier-Haack reaction to generate the corresponding 1-aryl-4-formyl-3-(4-hydroxy-6-methyl-2- oxo-2H-pyran-3-yl)pyrazoles (1) with the pyrone moiety of the DHA remaining intact. However, when the reac

Studies with 2H-Pyranones: Synthesis of New 3-Substituted-4-hydroxy-2H-pyran-2-ones

3-acetyl-4-hydroxy-6-methyl-2H-pyran-2-one 1a condensed with N,N-dimethylformamide dimethyl acetal yielding the enaminone 3a. The latter reacted with malononitrile yielding pyridine derivative 11. Benzofuranoylpyranes were prepared from reaction of 3a with 1,4-benzoquinone and 1,4-naphthoquinone, while pyranylpyranes were produced from reaction with hippuric acid. A variety of substituted pyranones were produced from reaction of 3a, with ammonia, amines and hydroxylamine.