Answered: H x.x HO OH cat. Pyridine Ethanol A HO…

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H x.x HO OH cat. Pyridine Ethanol A HO H₁C CH3 OH

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter22: Organic Chemistry And Biochemistry

Section: Chapter Questions

Problem 87QE

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Question

Draw a detailed mechanism, using curved arrow notation,for the synthesis of 3-carboxy-umbeliferone from 2,4- dihydroxybenzaldehyde and Meldrum's Acid via a Knovenagle condensation and hydrolysis. Please include all necessary catalyst such as 5% pyridine(catalyst) in ethanol).

H
x.x
HO
OH
cat. Pyridine
Ethanol A
HO
H₁C
CH3
OH

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