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Hozjan, Mišel; Ciber, Luka; Požgan, Franc; Svete, Jurij; Štefane, Bogdan; Grošelj, Uroš
MolBank, 03/2023, Letnik: 2023, Številka: 1Journal Article
Organocatalyzed synthesis of tert-butyl 2-amino-3-cyano-5-oxo-4-phenyl-5,7-dihydropyrano2,3-cpyrrole-6(4H)-carboxylate, prepared from Boc-tetramic acid and benzylidenemalononitrile, is disclosed. Two bifunctional noncovalent organocatalysts were employed, yielding the product as a racemic mixture in both cases. The structure of the new synthesized compound was confirmed by high resolution mass-spectrometry, 1H- and 13C-NMR, HSQC, and IR spectroscopy.
