1. Aldol reactions (condensation of two aldehydes or ketones to yield a ẞ-hydroxy carbonyl) can go in reverse (B-hydroxy carbonyl to two aldehyde/ketones, a retro-aldol). Propose mechanisms for the following two transformations, using both intra-molecular aldol and a retro-aldol reactions. Be sure to follow the rules we have discussed for writing reaction mechanisms! H₂C. H&C. Na+ -OEt ethanol H₂C- H₂C. HO Na OEt ethanol

Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
Chapter26: Aldol And Claisen Reactions
Section: Chapter Questions
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1. Aldol reactions (condensation of two aldehydes or ketones to yield a ẞ-hydroxy carbonyl) can go in
reverse (B-hydroxy carbonyl to two aldehyde/ketones, a retro-aldol). Propose mechanisms for the
following two transformations, using both intra-molecular aldol and a retro-aldol reactions. Be sure
to follow the rules we have discussed for writing reaction mechanisms!
H₂C.
H&C.
Na+ -OEt
ethanol
H₂C-
H₂C.
Transcribed Image Text:1. Aldol reactions (condensation of two aldehydes or ketones to yield a ẞ-hydroxy carbonyl) can go in reverse (B-hydroxy carbonyl to two aldehyde/ketones, a retro-aldol). Propose mechanisms for the following two transformations, using both intra-molecular aldol and a retro-aldol reactions. Be sure to follow the rules we have discussed for writing reaction mechanisms! H₂C. H&C. Na+ -OEt ethanol H₂C- H₂C.
HO
Na OEt
ethanol
Transcribed Image Text:HO Na OEt ethanol
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