title: [Reaction of conjugated systems containing nitrogen. VI. Stereostructure of adduct between 2,3-diphenyl-5,6-dihydropyrazine and diethyl fumarate or N-methylmaleimide].
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D005650:Fumarates; D007094:Imides; D009682:Magnetic Resonance Spectroscopy; D008298:Maleates; D008301:Maleimides; D008961:Models, Structural; D011719:Pyrazines
chemical_list: D005650:Fumarates; D007094:Imides; D008298:Maleates; D008301:Maleimides; D011719:Pyrazines