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Hydroxycarboxylic acids (ether carboxylic acids) and estersQ 0450 DOI: 10.1002/chin.201024072

Highly Enantioselective Addition of Methyl Propiolate to Aldehydes Catalyzed by a Titanium(IV) Complex of a β-Hydroxy Amide. — The new catalyst (I) is prepared from (L)-tyrosine. The system developed has a broad generality for aliphatic and aro-matic aldehydes. — (XU, T.; LIANG, C.; CAI, Y.; LI, J.; LI, Y.-M.; HUI*, X.-P.; Tetrahedron: Asymmetry 20 (2009) 23, 2733-2736; State Key Lab. Appl. Org. Chem., Lanzhou Univ., Lanzhou, Gansu 730000, Peop. Rep. China; Eng.) — Bartels

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ChemInform 2010, 41, issue 24 © 2010 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim