3. Oxalate clings onto Ca²+ ions and thus forms the principle component of kidney stones. In fungi, a retro-Claisen reaction results in acetic acid and oxalic acid. Which compound is the starting material for the reaction shown below? Support your answer with an arrow pushing mechanism. НО. A OH HO. B H₂O CH3 HO. olan mo lan OH H3C OH oxalic acid HO. C SCOA HO. D SCOA

3. Oxalate clings onto Ca²+ ions and thus forms the principle component of kidney stones. In fungi, a retro-Claisen reaction results in acetic acid and oxalic acid. Which compound is the starting material for the reaction shown below? Support your answer with an arrow pushing mechanism. НО. A OH HO. B H₂O CH3 HO. olan mo lan OH H3C OH oxalic acid HO. C SCOA HO. D SCOA

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter20: Dienes, Conjugated Systems, And Pericyclic Reactions

Section: Chapter Questions

Problem 20.27P

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