107089-96-3

Upstream product

• 107089-94-1 2,6-Dimethyl-4-(phenyl-hydrazono)-4H-chromene-3-carbonitrile 
• 77487-89-9 3-cyano-2,6-dimethylchromone 
• 27129-25-5 3-acetyl-2,6-dimethylchromone 

Relevant academic research and scientific papers

Benzopyrans: Part XX - 4-Oxo-4H-benzopyran-3-carbonitrile/Carboxylic Acid: Change of Their Reaction Courses by a Methyl Substituent at 2-Position

2-Methyl-4-oxo-4H-benzopyran-3-carbonitriles (1b) and the corresponding carboxylic acids (2b), unlike their 2-unsubstituted analogues (1a) and (2a), give with phenyl hydrazine the hydrazones (6b) and the pyrazoles (13b), respectively.The hydrazones (6b) have been converted into the benzopyranopyrazoles (8b).