20800-24-2

Upstream product

• 106-31-0 butanoic acid anhydride 
• 150-19-6 O-methylresorcine 
• 108-46-3 recorcinol 
• 123-72-8 butyraldehyde 
• 26213-82-1 7-methoxy-2-methyl-chromen-4-one 
• 74-83-9 methyl bromide 
• 4390-92-5 1-(2,4-dihydroxyphenyl)butan-1-one 
• 77-78-1 dimethyl sulfate 

Downstream Products

• 143286-57-1 1-(2-Hydroxy-4-methoxy-phenyl)-butan-1-one oxime 

Relevant academic research and scientific papers

INHIBITORS OF ANTIGEN PRESENTATION BY HLA-DR

Chromanone compounds, pharmaceutical compositions containing them, methods of making them, and methods of using them including methods for treating disease states, disorders, and conditions associated with the inhibition of antigen presentation by HLA-DR.

Primulin derivative as well as synthesis method and application of primulin derivative

The invention discloses a primulin derivative with antibacterial activity shown as the structural general formula (I), wherein R is selected from C2-C20 alkyls. The primulin derivative is prepared from raw materials including m-dihydroxybenzene and a fatty acid derivative by the steps: carrying out Friedel-Crafts acylation and methylation to synthesize a paeonol derivative, and carrying out oxidization after carrying out carbonyl reduction. The primulin derivative has good antibacterial activity and can be used as a potential antibacterial agent.

Synthesis of 2-acylphenol and flavene derivatives from the ruthenium-catalyzed oxidative c-h acylation of phenols with aldehydes

The cationic ruthenium hydride complex [(C6H6)(PCy3)(CO)RuH]+BF4- has been found to be an effective catalyst for the oxidative C-H coupling reaction of phenols with aldehydes to give 2-acylphenol compounds. The coupling of phenols with α,β-unsaturated aldehydes selectively gives the flavene derivatives. The catalytic method mediates direct oxidative C-H coupling of phenol and aldehyde substrates without using any metal oxidants or forming wasteful byproducts. A cationic ruthenium hydride complex catalyzes the oxidative C-H coupling of phenols with aldehydes to form 2-acylphenol and flavene derivatives.

Synthesis and lipase-mediated stereoselective deacetylation of (±)-3-acetoxymethyl-3-alkyl-7-methoxychroman-4-ones

Six (±)-3-acetoxymethyl-3-alkyl-7-methoxychroman-4-ones have been synthesized in four steps starting with the coupling of resorcinol with corresponding aliphatic acid leading to the formation of 2,4-dihydroxyphenyl alkyl ketones, which upon monomethylation and hydroxymethylation, followed by acetylation afforded the racemic acetoxymethylated compounds in 17-30% overall yields. Candida rugosa lipase-catalyzed deacetylation of (±)-3-acetoxymethylchromanones in diisopropyl ether exhibited fairly moderate enantioselectivity.

Synthese von 4-Alkoxy-2-hydroxyphenylketoximen als Metallextraktions-Reagenzien

The C-Acylation (Friedel-Crafts reaction) of resorcinol with aluminium chloride, the monoetherification in 4-position of the resulting 2,4-dihydroxyphenylketones, and the preparation of oximes (8, 9, 10, 11) from this ketones were investigated.The compounds obtained are characterized by elemental analysis, and the i.r., u.v. and 1H-n.m.r. spectra are discussed.Solubility data of some oximes are determined in water, octane and toluene.The extraction properties for copper-(II)-and iron-(III)-ions are measured by isotope methods in relation to the extragent structure, the extraction time and the pH-range.

THE BIRCH REDUCTION OF SOME OXYGEN HETEROCYCLES

On reduction with lithium-ammonia the chromone derivatives 1-5 and the aurone 6 gave by reductive ring opening the corresponding 2-hydroxyacetophenone derivatives 7-11.