98669-63-7

Upstream product

• 186581-53-3 diazomethane 
• 98669-64-8 4-hydroxy-5-(methoxyphenyl-methylene)-1,5-dihydropyrrol-2-one 
• 865-33-8 potassium methanolate 
• 97066-44-9 5-(α-Brombenzylidene)-4-methoxy-3-pyrrolin-2-on 
• 97066-42-7 5-(α-Brombenzyliden)-4-hydroxy-2-oxo-3-pyrrolin-3-carbonsaeuremethylester 
• 98669-62-6 4-Hydroxy-5-(α-methoxybenzyliden)-2-oxo-3-pyrrolin-3-carbonsaeure-methylester 

Downstream Products

• 98669-65-9 3-Brom-4-methoxy-5-(α-methoxybenzyliden)-3-pyrrolin-2-on 
• 98669-73-9 4-Methoxy-5-(α-methoxybenzyliden)-1-methyl-3-pyrrolin-2-on 

Relevant academic research and scientific papers

Synthesis and Properties of 5-Benzoyltetramic Acids

The synthesis of the title compounds 4a/b and their enol ethers 4c/d respectively by hydrolysis of the α-methoxybenzylidene-pyrrolinones 3 is reported.Methylation by diazomethane preferentially yields the benzoylpyrroles 7.Analogously, hydrolysis of the α

Reactions of 5-Bromoalkylidene-3-pyrrolin-2-ones,1

The title compounds 1 react with sodium methoxide to give 5--3-pyrrolin-2-ones 2 by substitution and to yield 5-hydroxy-2-pyridones 3 by ring enlargement.The relative amounts of the products depend on the substituents and the alko