116705-57-8

Upstream product

• 67-56-1 methanol 
• 104505-72-8 2-benzylidene <1,4>benzothiazine-3-one 
• 109-77-3 malononitrile 
• 24545-07-1 2-benzylidene-2H-1,4-benzothiazin-3(4H)-one 

Relevant academic research and scientific papers

A NOVEL SYNTHETIC ROUTE TO PHENYL-SUBSTITUTED PYRIDINES; SYNTHESIS OF BENZOPYRANOPYRIDINES, BENZOTHIOPYRANOPYRIDINES AND PYRIDOBENZOTHIAZINES(1-AZAPHENOTHIAZINES)

Reaction of 1,3-diphenylpropenone with malononitrile in base affords 1,4-diphenyl-2-methoxypyridine-3-carbonitrile.This reaction has been applied to a general synthesis of phenyl-substituted benzopyranopyridines, benzothiopyranopyridines and pyridobenzothiazines(1-azaphenothiazines).