A direct one-pot preparation or naphtho[2,3-b]furan-4,9-diones from 2-hydroxy-1,4-naphthoquinones and enamines

[摘要]：The reaction of 2-hydroxy-1,4-naphthoquinones with enamines, derived from ketones, in refluxing toluene afforded the corresponding 2,3-disubstituted naphtho[2,3-b]furan-4,9-dione derivatives in moderate to good yields.

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