823809-36-5

Upstream product

• 823809-34-3 N-(2-aminobenzylidene)-4-methylaniline 
• 105-36-2 ethyl bromoacetate 
• 2378-86-1 4-methylbenzyltriphenylphosphonium bromide 
• 1260104-29-7 trans-ethyl N-{2-[2-(4-methylphenyl)ethenyl]phenyl}aminoacetate 
• 823809-32-1 (E)-1-(2-nitrostyryl)-4-methylbenzene 
• 552-89-6 2-nitro-benzaldehyde 

Relevant academic research and scientific papers

Synthesis and photochemistry of 3-(o-stilbeneyl)-4-H/Me/Ph-sydnones; Intramolecular cyclization to 1,2-benzodiazepines and/or quinolines

Stilbeneylsydnone derivatives were synthesized by a sequence of reactions in good yields. Irradiation of 3-stilbeneyl-4-methylsydnone 4 gives 1H-1,2-benzodiazepine derivative 7 as the main product along with 2-methylquinoline derivative 20. Irradiation of 3-stilbeneyl-4-phenylsydnone 5 afforded only 1H-1,2-benzodiazepine derivative 8 whereas on irradiation of 4-unsubstituted 3-stilbeneylsydnone 3 no benzodiazepine derivative was detected. An efficient novel photochemical approach to 1H-1,2-benzodiazepines has been found from the new 3-(o-stilbeneyl)-4-substituted-sydnones via intramolecular 1,7-electrocyclization reaction of the photogenerated nitrile imines.

Complete 1H and 13C NMR spectral assignment of cis- and trans- 3-{2-[2-(4-methylphenyl)ethenyl]phenyl}sydnones

1H and 13C NMR spectra of cis- and trans-3-{2-[2-(4-methylphenyl)ethenyl]phenyl]}sydnones, the first stilbene-substituted mezoionic oxadiazolium rings, were fully assigned combining the information in various solvents, such as deuter