2022
DOI: 10.1515/znb-2022-0050
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Orthoamide und Iminiumsalze, CVIa. Kondensationsreaktionen von Orthoamiden der Alkincarbonsäuren mit CH-aciden Methylheterocyclen

Abstract: Orthoamides of alkynecarboxylic acids 10 react with 2-thienyl-acetonitrile under condensation to give ketene aminals. In the reaction of orthoamides 10 with 2-benzimidazolyl-acetonitrile tricyclo[1,2-a]benzimidazol-4-carbonitriles are formed under similar conditions. From 2-methyl-1,3-disubstituted-triazin-2,4-diones and orthoamides 10 the ketene aminals result at room temperature.

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