Crucial Role of the Ligand of Silyl Lewis Acid in the Mukaiyama Aldol Reaction.
β Scribed by Kazuaki Ishihara; Yukihiro Hiraiwa; Hisashi Yamamoto
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 35 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0931-7597
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β¦ Synopsis
Abstract
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## Abstract The Lewis acidity of various silyl triflates was quantified by utilizing [D~5~]pyridine as a ^2^H NMR spectroscopy probe. The chemical shifts of the ^2^H NMR signals for pyridineβsilyl adducts are reported. The rate constants of silyl triflate catalyzed DielsβAlder reactions were determ