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Asymmetric pinacol coupling reaction catalyzed by dipeptide-type Schiff bases

✍ Scribed by Jiwu Wen; Jun Zhao; Xin Wang; Jianyu Dong; Tianpa You

Book ID
108211619
Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
175 KB
Volume
245
Category
Article
ISSN
1381-1169

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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 πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 French βš– 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