52830-78-1

Upstream product

• 85-44-9 phthalic anhydride 
• 6375-75-3 3-chloro-N,N-diethylaniline 

Relevant academic research and scientific papers

Tri- or tetrasubstituted diphenylphthalides

Substituted 3,3-diphenylphthalides, useful as color precursors, particularly in the art of pressure-sensitive duplicating systems and heat-sensitive marking systems, are prepared by condensing substituted 2-benzoylbenzoic acids with substituted anilines.

Phenyljulolidinylphthalides

Substituted 3,3-diphenylphthalides, useful as color precursors, particularly in the art of pressure-sensitive duplicating systems, are prepared by condensing substituted 2-benzoylbenzoic acids with substituted anilines.