The reaction of 1,1-bis(morpholino)ethene with precursors of о-quinone methides derived from Mannich bases of phenols and 2-naphthols provided a series of chromeno[2,3-b]chromenes. The cascade process included a hetero-Diels–Alder reaction between… Click to show full abstract
The reaction of 1,1-bis(morpholino)ethene with precursors of о-quinone methides derived from Mannich bases of phenols and 2-naphthols provided a series of chromeno[2,3-b]chromenes. The cascade process included a hetero-Diels–Alder reaction between о-quinone methide and ketenaminal, elimination of secondary amine, and [4+2] cycloaddition between о-quinone methide and the chromene intermediate.
Keywords:
quinone methides;
quinone;
morpholino ethene;
bis morpholino;
chromeno chromenes
Journal Title: Chemistry of Heterocyclic Compounds
Year Published: 2017
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Journal Title: Chemistry of Heterocyclic Compounds
Year Published: 2017
Link to full text (if available)
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recommendations!