- Rearrangement of allylic and propargylic alcohols catalyzed by the combined use of tetrabutylammonium perrhenate(VII) and p-toluenesulfonic acid
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Allylic rearrangement and/or dehydration reaction of allylic alcohols proceeds smoothly by the use of catalytic amounts of tetrabutylammonium perrhenate and p-toluenesulfonic acid hydrate. Treatment of propargylic alcohols with the catalysts at room temperature affords the rearranged products, α,β-unsaturated carbonyl compounds, while β,γ-unsaturated ketones are obtained as main products by the reaction in refluxing 1,2-dichloroethane. The application of this catalytic system is also described for the preparation of some synthetic intermediates.
- Narasaka,Kusama,Hayashi
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p. 2059 - 2068
(2007/10/02)
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- ISOMERAZATION OF PROPARGYLIC ALCOHOLS CATALYZED BY AN IRIDIUM COMPLEX
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α,β-Enones were synthesized by the isomerization of propargylic alcohols catalyzed by an iridium pentahydride complex.
- Ma, Dawei,Lu, Xiyan
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p. 2109 - 2112
(2007/10/02)
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