99067-85-3

Upstream product

• 78-85-3 2-methylpropenal 
• 100-63-0 phenylhydrazine 
• 123230-79-5 C₁₇H₂₀N₂O₂S 
• 5570-70-7 isobutyraldehyde phenylhydrazone 

Downstream Products

• 102267-93-6 3-methyl-6-phenylpyrrolo<3,4-b>pyridine-5,7-dione 
• 138842-32-7 3-Methyl-6-phenyl-1,4-dihydro-pyrrolo[3,4-b]pyridine-5,7-dione 

Relevant academic research and scientific papers

1-PHENYLAZO-1-ALKENES

Aliphatic aldehyde phenylhydrazones 1 were converted into 1-phenylazo-1-alkenes 3 either by the reaction with I2 and pyridine followed by base induced 1,4-elimination of pyridine.HI (Method A), or via N-(4-methylbenzenesulfonyl)-N-phenylhydrazones 7 which undergo 1,4-elimination of p-toluenesulfinic acid upon treatment with KOt-Bu (Method B).Both procedures yield mixtures of configurational isomers of the phenylazo-alkenes EE- and EZ- 3b-3e; Method B is giving rise to the kinetically controlled isomer mixture (EZ-3 predominant), which equilibrates to the thremodynamicratio (EE-3 predominant) as afforded by Method A.