| 1. | There are 6 ?-electrons, so furan is aromatic.
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| 2. | Furan is used as a starting point to other specialty chemicals.
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| 3. | Ordinarily, furan-side monoadducts form in a higher proportion.
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| 4. | Reduction gives 2, 5-bis ( hydroxymethyl ) furan.
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| 5. | ?-Epoxy carbonyls have been known to cyclize to furans.
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| 6. | The furan may be fused in different ways producing several isomers.
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| 7. | The Celgar pulp mill in Castlegar has eliminated dioxin and furan compounds.
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| 8. | Included are pyridine, thiophene, pyrrole, and furan.
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| 9. | In furan, the oxygen atom is sp 2 hybridized.
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| 10. | Dioxins and furans are considered by many to be serious health hazards.
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