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<i>tert</i>-Butyl 2-Amino-3-cyano-5-oxo-4-phenyl-5,7-dihydropyrano[2,3-<i>c</i>]pyrrole-6(4<i>H</i>)-carboxylate
oleh: Mišel Hozjan, Luka Ciber, Franc Požgan, Jurij Svete, Bogdan Štefane, Uroš Grošelj
Format: | Article |
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Diterbitkan: | MDPI AG 2023-02-01 |
Deskripsi
Organocatalyzed synthesis of <i>tert</i>-butyl 2-amino-3-cyano-5-oxo-4-phenyl-5,7-dihydropyrano[2,3-<i>c</i>]pyrrole-6(4<i>H</i>)-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, <sup>1</sup>H- and <sup>13</sup>C-NMR, HSQC, and IR spectroscopy.