936224-29-2

Upstream product

• 936224-21-4 4-methylphenyl 3-azido-2-thiophenecarboxylate 
• 603-35-0 triphenylphosphine 
• 56488-92-7 3-azido-2-thiophenecarboxylic acid 
• 106-44-5 p-cresol 
• 936224-16-7 3-azido-2-thiophenecarbonyl chloride 

Relevant academic research and scientific papers

Synthesis of 6H-thieno[3,2-b]pyridin-7-ones from N-(2-X-Carbonyl)-3-thienyl ketenimines (X = RS, ArO, R2N) via consecutive [1,5]-X sigmatropic rearrangement and 6π-electrocyclization

N-(2-X-Carbonyl)-3-thienyl ketenimines (X = RS, ArO, R2N) undergo cyclization under thermal conditions, through a [1,5]-X sigmatropic rearrangement followed by a 6π-electrocyclic ring closure of the resulting intermediate ketene, to provide 6H-thieno[3,2-b]pyridin-7-ones, bearing alkylthio, arylthio, aryloxy or amino groups at their 5-position. Georg Thieme Verlag Stuttgart.