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Asymmetric pinacol coupling of aromatic aldehydes catalyzed by a new titanium–Schiff base complex

✍ Scribed by You-Gui Li; Qing-Shan Tian; Jun Zhao; Yan Feng; Min-Jie Li; Tian-Pa You

Book ID
108283765
Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
252 KB
Volume
15
Category
Article
ISSN
0957-4166

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Highly diastereoselective pinacol coupli
Highly diastereoselective pinacol coupling of aldehydes catalyzed by titanium-Schiff base complexes
✍ Marco Bandini; Pier Giorgio Cozzi; Stefano Morganti; Achille Umani-Ronchi 📂 Article 📅 1999 🏛 Elsevier Science 🌐 French ⚖ 181 KB

A new effective methodology for a highly diastereoselective pinacol coupling of aldehydes is described. The method employes 3 mol % of a complex prepared in situ from TiCI4(THF)2 and a Schi,f base in acetonitrile. The catalytic cycle is realized with Me3SiCI and Mn as reducing agent. The dependence