Three Intermediates in the Synthesis of Chrysanthemic Acid

The structures of three compounds, namely, dimethyl 2-{(1S)-1-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]-2-methyl-2-nitropropyl}malonate [C₁₄H₂₃NO₈, (I)], dimethyl 2-{(1S)-1-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]-2-methyl-2-(phenylsulfonyl)propyl}malonate [C₂₀H₂₈O₈S, (II)], and dimethyl (3_S)-2,2-dimethyl-3-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]cyclopropane-1,1-dicarboxylate [C₁₄H₂₂O₆, (III)], which are intermediates in the synthesis of chrysanthemic acid, are presented and discussed.

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