Which of the following compounds would you expect to undergo aldol self- condensation? Show the product of each successful reaction. (a) Trimethyl acetaldehyde (d) 3-Pentanone (b ) Cyclobutanone (e) Decanal (c) Benzophenone (diphenyl ketone) (f) 3-Phenyl-2-propenal

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Diol

In chemistry there are so many chemical compounds that have a hydroxyl group but a chemical compound having two hydroxyl groups (-OH) is termed as a diol. It also implies the presence of two alcohols whereas polyols contain two or more than two hydroxyl groups (-OH). Glycol or 1,2-diol is an aliphatic diol that has two alcohol groups on adjacent carbon atoms. In industries, the most commonly used diol is ethylene glycol.