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ChemInform 2009, 40, issue 46 © 2009 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim www.cheminform.wiley-vch.de Pyran derivatives R 0340 One-Pot Catalytic Asymmetric Synthesis of Pyranones. — The target products are prepared from a variety of furfural derivatives with enantioselectivities >90% e.e. The procedure involves initial asymmetric alkylation of the substrates to generate zinc furyl alkoxide intermediates. Subsequent oxidation with NBS promotes the Achmatowicz reaction to furnish the pyranone products. — (CHENG, K.; KELLY, A. R.; KOHN, R. A.; DWECK, J. F.; WALSH*, P. J.; Org. Lett. 11 (2009) 12, 2703-2706; Dep. Chem., Univ. Pa., Philadelphia, PA 19104, USA; Eng.) — R. Steudel 46- 141

ChemInform Abstract: One-Pot Catalytic Asymmetric Synthesis of Pyranones

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Pyran derivativesR 0340 One-Pot Catalytic Asymmetric Synthesis of Pyranones. — The target products are

prepared from a variety of furfural derivatives with enantioselectivities >90% e.e. The procedure involves initial asymmetric alkylation of the substrates to generate zinc furyl alkoxide intermediates. Subsequent oxidation with NBS promotes the Achmatowicz reaction to furnish the pyranone products. — (CHENG, K.; KELLY, A. R.; KOHN, R. A.; DWECK, J. F.; WALSH*, P. J.; Org. Lett. 11 (2009) 12, 2703-2706; Dep. Chem., Univ. Pa., Philadelphia, PA 19104, USA; Eng.) — R. Steudel

46- 141

ChemInform 2009, 40, issue 46 © 2009 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

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