Question

3. Draw the mechanism of the following transformation (this is similar to an aldol condensation reaction,3). ? N HO OH HO ? malonic acid benzaldehyde pyridine ? H 4. Draw the mechanism of decarboxylation of the intermediate above (the product of the reaction above) and follow with the tautomerization to get to trans-cinnamic acid. Be clear while drawing the tautomerization; when proton transfers are taking place, show water and hydroxide or hydronium and water as your acid and base sources -/+ H+ will be marked incorrect (3).

          3. Draw the mechanism of the following transformation (this is similar to an aldol condensation reaction,3).
?
N
HO
OH
HO
?
malonic acid
benzaldehyde
pyridine
?
H
4. Draw the mechanism of decarboxylation of the intermediate above (the product of the reaction above) and follow with the tautomerization to get to trans-cinnamic acid. Be clear while drawing the tautomerization; when proton transfers are taking place, show water and hydroxide or hydronium and water as your acid and base sources -/+ H+ will be marked incorrect (3).

3. Draw the mechanism of the following transformation (this is similar to an aldol condensation reaction,3).
?
N
HO
OH
HO
?
malonic acid
benzaldehyde
pyridine
?
H
4. Draw the mechanism of decarboxylation of the intermediate above (the product of the reaction above) and follow with the tautomerization to get to trans-cinnamic acid. Be clear while drawing the tautomerization; when proton transfers are taking place, show water and hydroxide or hydronium and water as your acid and base sources -/+ H+ will be marked incorrect (3).

Added by Guillermo T.

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