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2005
Oxocarboxylic acids and esters
P 0290
Ti-Crossed-Claisen Condensation Between Carboxylic Esters and Acid Chlorides
Acids: A Highly Selective and General Method for the Preparation of Various
30- 052 or
β-Keto Esters. — Optimized conditions for the highly chemoselective cross-condensation of carboxylic acid chlorides and carboxylic esters are developed. They use the
appropriate imidazole reagent and afford the desired β-keto esters in good to excellent
yields. Only traces of the undesired self-condensed β-keto esters are formed (to be continued). — (MISAKI, T.; NAGASE, R.; MATSUMOTO, K.; TANABE*, Y.; J. Am.
Chem. Soc. 127 (2005) 9, 2854-2855; Dep. Chem., Sch. Sci. Technol., Kwansei
Gakuin Univ., Sanda, Hyogo 669, Japan; Eng.) — Klein
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