879291-61-9

Upstream product

• 847377-58-6 5-methoxycarbonyl-6-phenyl-2-phenyl-2-phenylimino-6H-1,3,4-thiadiazine 
• 32803-73-9 methyl 3-phenyl-3-chloro-2-ketopropionate 
• 5351-69-9 4-Phenyl-3-thiosemicarbazide 

Relevant academic research and scientific papers

Fused polycyclic nitrogen-containing heterocycles 13. Synthesis of 6-phenyl-2-phenylimino-6H-1,3,4-thiadiazine-5-carboxylic acid and its intermolecular cyclodehydration accompanied by sulfur extrusion to form dipyrazolo[1,5-a,1′,5′d]pyrazine

Condensation of methyl phenylchloropyruvate with 4-phenylthiosemicarbazide proceeds as the Bose reaction to form 5-methoxycarbonyl-6-phenyl-2-phenylimino- 6H-1,3,4-thiadiazine, which is hydrolyzed to give carboxylic acid. In the presence of polyphosphoric