Question

5) Why is the Aldol reaction often called an Aldol condensation? A) The initially formed b-hydroxy carbonyl compound loses water B) The initially formed b-hydroxy carbonvl compound loses an oxygen atom. C) The initially formed b-hydroxy carbonyl compound loses a hydrogen atom D) The initially formed b-hydroxy carbonyl compound loses a hydroxyl group. 6) When is a crossed Aldol reaction said to be synthetically useful? A) When both carbonyl compounds have a hydrogens B) When one carbonyl compound has no a hydrogens C) When one carbonyl compound has no b hydrogens D) When both carbonyl compounds have no a hydrogens 7) Which is the unsaturated carbonyl compound formed in the dehydration of the following b-hydroxy carbonyl compound? он A) I C) I and II B) 11 D) None of the choices 8) Which of the following carbonyl compounds will undergo Aldol addition reactions when treated with aqueous sodium hy droxide? CHO A) I C) III B) II D) None of the choices

Answer 1

Simply condensation is removal of H_2O (a) compound having alpha H's undergo Aldol aldol addition reaction. (c) (III)