A new route to naphtho[2,3-b]furan-4,9-diones from thio-substituted 1,4-naphthoquinones
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概要
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Reaction of 2-phenylthio- or 2-ethylthio-1,4-naphthoquinones (1) and (2) with lithium enolates or pyridinium ylides was found to give alkylated 1,4-naphthoquinones (3)-(6) in high yields. Alkylated 1,4-naphthoquinones (5) and (6) were then effectively cyclized to 2-substituted naphtho[2,3-b]furan-4,9- diones (8) by action of bromine in acetic acid.
- Royal Society of Chemistryの論文
- 1990-01-01
Royal Society of Chemistry | 論文
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