Question

Why water retards the aldol reaction of acetone?

Answer 1

Answer:

❗ Hllw ❗

Explanation:

Aldol addition reactions of ketones are rarely successful, since they are ... Aldol reaction in water

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Answer 2

Answer:

1.5.7 Self-Reactions of Ketones

Aldol addition reactions of ketones are rarely successful, since they are usually endoergonic. For example, the base-mediated aldolization of acetone provides only a few percent of the aldol, ‘diacetone alcohol’ (equation 26).11,34 However, the conversion may be accomplished in 75% yield by refluxing acetone under a Soxhlet extractor containing calcium or bariumhydroxide.13,35 On the other hand, dimethoxyacetone dimerizes under basic conditions to the aldol, with an equilibrium constant significantly greater than unity (K = 10 dm3 mol−1; equation 27).36 The difference in equilibrium constants of equations (26) and (27) parallels the equilibrium constants for hydration of the two ketones, and results from the inductive effect of the methoxy groups.