ChemInform Abstract: Chiral Lactones by Asymmetric Hydrogenation — A Step Forward in (+)-Biotin Production
✍ Scribed by Werner Bonrath; Reinhard Karge; Thomas Netscher; Felix Roessler; Felix Spindler
- Publisher
- John Wiley and Sons
- Year
- 2011
- Weight
- 18 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0931-7597
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Asymmetric Phase-Transfer Alkylation Catalyzed by a Chiral Quaternary Phosphonium Salt with a Multiple Hydrogen-Bonding Site. -The chiral phosphonium salt (II) is synthesized and used as a phase-transfer catalyst in the asymmetric benzylation of (III). Under the same conditions, a phosphonium salt