CH, -CH=CCH=CHCH3 The Wittig reaction can be used for the synthesis of conjugated dienes. Propose a combination of Wittig reagent and aldehyde/ketone that can be used to synthesize the double bond labeled b in this structure.

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A: Which one of the following is correct

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A: Please have look onto the solution:

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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.