A. What is the correct structure for a-D-glucopyranose? CH₂OH a HO HO- OH b HO HO- OH HOH₂C OH OH OH CH₂OH HO C. HO HO- OH OH CH₂OH OH OH B. Draw structures for the products you would expect to obtain from reaction of B-D-galactopyranose with each of the following reagents. Be sure to include all relevant stereochemistry. [FOUR only] A. CH, Ag₂O B. warm dilute HNO3 C. (CH3CO)20, pryridine D. NaBH in H₂O E. CH₂OH, HCI F. Br₂, H₂O HO CH₂OH HO- OH OH B-D-galactopyranose

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
Chapter16: Aldehydes And Ketones
Section: Chapter Questions
Problem 16.67P: Treatment of -D-glucose with methanol in the presence of an acid catalyst converts it into a mixture...
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A.
What is the correct structure for a-D-glucopyranose?
CH₂OH
a
HO
HO-
OH
b
HO
HO-
OH
HOH₂C
OH
OH
OH
CH₂OH
HO
C.
HO
HO-
OH
OH
CH₂OH
OH
OH
B. Draw structures for the products you would expect to obtain from reaction of B-D-galactopyranose
with each of the following reagents. Be sure to include all relevant stereochemistry. [FOUR only]
A. CH, Ag₂O
B. warm dilute HNO3
C. (CH3CO)20, pryridine
D. NaBH in H₂O
E. CH₂OH, HCI
F. Br₂, H₂O
HO
CH₂OH
HO-
OH
OH
B-D-galactopyranose
Transcribed Image Text:A. What is the correct structure for a-D-glucopyranose? CH₂OH a HO HO- OH b HO HO- OH HOH₂C OH OH OH CH₂OH HO C. HO HO- OH OH CH₂OH OH OH B. Draw structures for the products you would expect to obtain from reaction of B-D-galactopyranose with each of the following reagents. Be sure to include all relevant stereochemistry. [FOUR only] A. CH, Ag₂O B. warm dilute HNO3 C. (CH3CO)20, pryridine D. NaBH in H₂O E. CH₂OH, HCI F. Br₂, H₂O HO CH₂OH HO- OH OH B-D-galactopyranose
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