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Unsymmetrical Unsaturated Ketones from Lactones and Carboxylic Acids in One Step

✍ Scribed by Wolfgang Giersch; Ferdinand Naef

Publisher
John Wiley and Sons
Year
2004
Tongue
German
Weight
193 KB
Volume
87
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

A one‐step transformation of γ‐ and δ‐(spiro)lactones into γ,δ‐ and δ,ε‐unsaturated ketones in the presence of carboxylic acids in the vapor phase at 400° over a supported manganese catalyst is reported for the first time. The scope of this new transformation is exemplified with a series of lactones, and a mechanistic rationale is proposed.

📜 SIMILAR VOLUMES

γ,δ- and δ,ε-Unsaturated Aldehydes from
γ,δ- and δ,ε-Unsaturated Aldehydes from γ- and δ-Lactones in One Step. Preliminary Communication
✍ Wolfgang Giersch; Ferdinand Naef 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 German ⚖ 164 KB 👁 1 views

## Abstract A one‐step transformation of __γ__‐ and __δ__‐(spiro)lactones into __γ__,__δ__‐ and __δ__,__ε__‐unsaturated aldehydes with an excess of formic acid in the vapor phase over a supported manganese catalyst is described for the first time. The scope and limitations of this new reaction are