Design, synthesis, and herbicidal activity of novel 2-(arylamino)-5-methyl-4-methylene-7-(methylthio)-4H-pyrido[4,3-d][1,3]oxazine-8-carbonitrile derivatives
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DOI: 10.1177/1747519819845771
Abstract: A series of 5-methyl-4-methylene-7-methylthio-2-arylmino-4H-pyrido[4,3-d][1,3]oxazine-8-carbonitrile derivatives were synthesized via tandem aza-Wittig and annulation reactions with {N-[3-acetyl-5-cyano-2-methyl-6-(methylthio)pyridin-4-yl]imino}triphenylphosphorane and aryl isocyanate in dry dichloromethane. Their structures were clearly confirmed by infrared, 1H NMR, 13C NMR, high-resolution mass spectrometry,… read more here.
Keywords: methyl; methylene methylthio; methyl methylene; oxazine carbonitrile ... See more keywords