92508-50-4

Upstream product

• 1846-74-8 3-benzoyl-chromen-2-one 
• 123-62-6 propionic acid anhydride 
• 7216-47-9 3-benzoyl-3,4-dihydrocoumarin 

Downstream Products

• 136319-99-8 3-(nicotinoylaminobenzyl)-2H-1-benzopyran-2-one 
• 136320-00-8 3-(isonicotinoylaminobenzyl)-2H-1-benzopyran-2-one 
• 92508-58-2 N-[(2-Oxo-2H-chromen-3-yl)-phenyl-methyl]-2-phenyl-acetamide 
• 92508-55-9 3-(1-Chlorobenzyl)-2-oxo-2H-1-benzopyran 
• 92508-54-8 3-(1-hydroxybenzyl)-2-oxo-2H-1-benzopyran 
• 92508-57-1 2-Chloro-N-[(2-oxo-2H-chromen-3-yl)-phenyl-methyl]-acetamide 
• 92508-61-7 N-[(2-Oxo-2H-chromen-3-yl)-phenyl-methyl]-malonamic acid ethyl ester 
• 92508-56-0 3-(1-Acylaminobenzyl)-2-oxo-2H-1-benzopyran 
• 92508-49-1 3-(1-acetyloxybenzyl)-2H-1-benzopyran-2-one 
• 92508-60-6 N-[(2-Oxo-2H-chromen-3-yl)-phenyl-methyl]-acrylamide 
• 136320-01-9 3-<1-(3-dimethylaminopropanoyl)aminobenzyl>-2H-1-benzopyran-2-one 
• 136319-97-6 3-<1-(4-dimethylaminobenzoyl)aminobenzyl>-2H-1-benzopyran-2-one 
• 136319-98-7 3-<1-(4-diethylaminobenzoyl)aminobenzyl>-2H-1-benzopyran-2-one 
• 92508-59-3 N-[(2-Oxo-2H-chromen-3-yl)-phenyl-methyl]-benzamide 

Relevant academic research and scientific papers

Thermal Transformations of Some 3-Acyl-2-oxo-2H-1-benzopyrans with Acid Anhydrides

The reaction of 3-benzoyl- and 3-acetyl-2-oxo-2H-1-benzopyrans (4 and 5) with acid anhydrides in the presence of sodium acetate or triethylamine has been studied.With propionic, butyric and isobutyric acid anhydrides, 4 affords the rearrangement products 6 and 7, dilactones (8) and benzyl esters (9), whereas with acetic anhydride 6a, 10, 11 and 12 are obtained.The reaction of 5 with acetic and propionic acid anhydrides affords 6e, 8f and 9f.Conversion of 9c into different products under acidic conditions has also been studied.