An Unusual Domino Retro-Ene—Conia Reaction: Regio- and Stereoselective One-Carbon Ring Expansion of Fenchol Derivatives.

An Unusual Domino Retro-Ene–Conia Reacti

An Unusual Domino Retro-Ene–Conia Reaction: Regio- and Stereoselective One-Carbon Ring Expansion of Fenchol Derivatives

✍ Georg Rüedi; Dimitri N. Laikov; Hans-Jürgen Hansen 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 German ⚖ 815 KB

## Abstract The 2‐__exo__‐substituted fenchol derivatives **1**–**7**, easily prepared from (−)‐fenchone in good‐to‐excellent yields, were pyrolyzed by dynamic gas‐phase thermo‐isomerization (DGPTI). At temperatures of __ca.__ 620°, the substrates with a hydroxyallyl (**1**–**4**) or a hydroxypropa