99300-51-3

Upstream product

• 60417-43-8 5-(4-Methylphenyl)methylene-3,4-dimethyl-3-pyrrolin-2-one 
• 55170-61-1 (Z)-3,4-dimethyl-5-<(4-methylphenyl)methylene>-3-pyrrolin-2-one 

Downstream Products

• 105886-68-8 3,4-Dimethyl-5-hydroxy-5-<(4-methylphenyl)methyl>-3-pyrrolin-2-one 
• 105886-64-4 3,4-Dimethyl-5-methoxy-5-<(4-methylphenyl)methyl>-3-pyrrolin-2-one 
• 105886-72-4 3,4-Dimethyl-4-methylperoxy-2-<(4-methylphenyl)methyl>-2-pyrrolin-5-one 
• 60417-43-8 5-(4-Methylphenyl)methylene-3,4-dimethyl-3-pyrrolin-2-one 

Relevant academic research and scientific papers

Reactivity of Pyrrole Pigments. Part VII Autoxidation of Model Compounds for 5(2H)-Dipyrrylmethanones and 3,4-Dihydro-5(1H)-Pyrromethenones

The autoxidation in alkine media and in the dark of some 5-methyl substituted 3,4-dimethyl-3-pyrrolin-2-ones and 5-methylene substituted pyrrolin-2-ones is studied.Both types of compounds are found to give autoxidation products that indicate very characteristic reaction pathways. - Keywords: Autoxidation; Bile pigments; Dihydropyrromethenoes; Dipyrrylmethanones

Reactivity of Pyrrole Pigments, VIII - Preparation of 5(2H)-Dipyrrylmethanones from 5(1H)-Pyrromethenones by Reduction with Sodium Dithionite

5(1H)-Pyrromethenones 3 have been reduced with sodium dithionite to give 5(2H)-dipyrrylmethanones 4 in very good yields.Some of the conditions to optimize this reduction have been studied.

REACTIVITY OF PYRROLE PIGMENTS. PART 6. ELECTROCHEMICAL REDUCTION OF SOME 5(1H)-PYRROMETHENONES AND 5-ARYLMETHYLENE-3,4-DIMETHYL-3-PYRROLIN-2-ONES

The electrochemical reduction of some 5(1H)-pyrromethenones and 5-arylmethylene-3-pyrrolin-2-ones in dimethylformamide (DMF) has been studied by polarography and by identification of their electrochemical reduction products.The reduction processes observe