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Aldol–Tishchenko reaction

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The Aldol–Tishchenko reaction is a tandem reaction involving an aldol reaction and a Tishchenko reaction. In organic synthesis, it is a method to convert aldehydes and ketones into 1,3-hydroxyl compounds. The reaction sequence in many examples starts from conversion of a ketone into an enolate by action of lithium diisopropylamide (LDA), to which a suitable aldehyde is added. The resulting mono-ester diol is then converted into the diol by a hydrolysis step. With both the acetyl trimethylsilane[1] and propiophenone[2] as reactants, the diol is obtained as a pure diastereoisomer.

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Aldol–Tishchenko reaction starting from acetyl trimethylsilane and acetaldehyde
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Aldol–Tishchenko reaction starting from propiophenone and acetaldehyde
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