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Synlett 1992; 1992(11): 897-900
DOI: 10.1055/s-1992-21533
DOI: 10.1055/s-1992-21533
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Enantioselective Synthesis of 3-Oxoesters and Carboxylic Acids as Polyfunctional Small Building Blocks with a Quaternary Stereogenic Center
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Publication History
Publication Date:
08 March 2002 (online)
Polyfunctional 2-substituted 3-oxoesters 4 and carboxylic acids 6 bearing a quaternary stereogenic center are synthesized in good overall yields and high enantiomeric excesses via SAMP/-RAMP-hydrazones. The absolute configuration is confirmed by X-ray structure analysis of 3-oxoester 4i and carboxylic acid 6a.