D-glucose exists as two epimeric cyclic hemiacetals: a-D-glucopyranose (left, labeled hydroxy group is in the axial position) and B-D-glucopyranose (right, the labeled hydroxy group is in equatorial position). The two anomers equilibrate via the open aldehyde form. Draw the curved arrows to show the complete reaction mechanism for the conversion of one anomer to the other under acidic catalysis. HOH HOH Ho HO HO HO HO- H H HO- OH!-- H H OH H OHI H
D-glucose exists as two epimeric cyclic hemiacetals: a-D-glucopyranose (left, labeled hydroxy group is in the axial position) and B-D-glucopyranose (right, the labeled hydroxy group is in equatorial position). The two anomers equilibrate via the open aldehyde form. Draw the curved arrows to show the complete reaction mechanism for the conversion of one anomer to the other under acidic catalysis. HOH HOH Ho HO HO HO HO- H H HO- OH!-- H H OH H OHI H
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:D-glucose exists as two epimeric cyclic hemiacetals: a-D-glucopyranose (left, labeled
hydroxy group is in the axial position) and B-D-glucopyranose (right, the labeled hydroxy
group is in equatorial position). The two anomers equilibrate via the open aldehyde form.
Draw the curved arrows to show the complete reaction mechanism for the conversion of
one anomer to the other under acidic catalysis.
HOH
HOH
Ho
HO
HO
HO
HO-
H
H
HO-
OH!--
H
H
OH
H
OHI
H
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