tert-Butyl 2-Amino-3-cyano-5-oxo-4-phenyl-5,7-dihydropyrano[2,3-c]pyrrole-6(4H)-carboxylate

Organocatalyzed synthesis of tert-butyl 2-amino-3-cyano-5-oxo-4-phenyl-5,7-dihydropyrano[2,3-c]pyrrole-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, H-1- and C-13-NMR, HSQC, and IR spectroscopy.

Automated summary

A study on the organocatalyzed synthesis of tert-butyl 2-amino-3-cyano-5-oxo-4-phenyl-5,7-dihydropyrano[2,3-c]pyrrole-6(4H)-carboxylate from Boc-tetramic acid and benzylidenemalononitrile was presented. Two bifunctional noncovalent organocatalysts were used, resulting in the racemic mixture of the product in both cases. The structure of the newly synthesized compound was confirmed by high resolution mass-spectrometry, H-1- and C-13-NMR, HSQC, and IR spectroscopy.