4. In the reaction below, the ketone oxygen is 180, rather than the more common ¹60 isotope. The methanol oxygens are 160. Does the 180 in the product reside in the acetal or in the water, or in both places, on the right side of the equation? Write 160 or 180 above the arrows. The reaction is run in benzene solvent with catalytic HCI. 180 Š + 2 CH₂-¹60-H H₂CO OCH3 + H₂O

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
Chapter9: Nucleophilic Substitution And Β-elimination
Section: Chapter Questions
Problem 9.54P
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4. In the reaction below, the ketone oxygen is 180, rather than the more common ¹60 isotope.
The methanol oxygens are 160. Does the 180 in the product reside in the acetal or in the water,
or in both places, on the right side of the equation? Write ¹60 or 180 above the arrows. The
reaction is run in benzene solvent with catalytic HCI.
180
3
+ 2 CH3-¹60-H
H3CO, OCH3
+ H₂O
Transcribed Image Text:4. In the reaction below, the ketone oxygen is 180, rather than the more common ¹60 isotope. The methanol oxygens are 160. Does the 180 in the product reside in the acetal or in the water, or in both places, on the right side of the equation? Write ¹60 or 180 above the arrows. The reaction is run in benzene solvent with catalytic HCI. 180 3 + 2 CH3-¹60-H H3CO, OCH3 + H₂O
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