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Dotsenko, Victor V; Sinotsko, Anna E; Strelkov, Vladimir D; Varzieva, Ekaterina A; Russkikh, Alena A; Levchenko, Arina G; Temerdashev, Azamat Z; Aksenov, Nicolai A; Aksenova, Inna V
Molecules (Basel, Switzerland), 01/2023, Letnik: 28, Številka: 2Journal Article
The reaction between dithiomalondianilide (N,N'-diphenyldithiomalondiamide) and alkyl 3-aryl-2-cyanoacrylates in the presence of morpholine in the air atmosphere leads to the formation of alkyl 6-amino-4-aryl-7-phenyl-3-(phenylimino)-4,7-dihydro-3H-1,2dithiolo3,4-b- pyridine-5-carboxylates in 37-72% yields. The same compounds were prepared in 23-65% yields by ternary condensation of aromatic aldehydes, ethyl(methyl) cyanoacetate and dithiomalondianilide. The reaction mechanism is discussed. The structure of ethyl 6-amino-4-(4-methoxyphenyl)-7-phenyl-3-(phenylimino)-4,7-dihydro-3H-1,2dithiolo3,4-bpyridine-5-carboxylate was confirmed by X-ray crystallography. Two of the prepared compounds showed a moderate growth-stimulating effect on sunflower seedlings. Three of the new compounds were recognized as strong herbicide safeners with respect to herbicide 2,4-D in the laboratory and field experiments on sunflower.
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in: SICRIS
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