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. Author manuscript; available in PMC: 2013 Oct 24.
Published in final edited form as: J Am Chem Soc. 2012 Oct 10;134(42):17823–17831. doi: 10.1021/ja309003x

Table 3.

Cycloaddition with Meldrum’s Acid Alkylidenes

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Yields given are of the isolated products. Diastereomeric ratios (d.r.) determined by 1H NMR. Enantiomeric excesses (e.e.) of the major diastereomer determined by chiral HPLC.