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This tag should be applied to questions about the Wittig reaction and its variants, including the Horner–Wadsworth–Emmons reaction.

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Synthesis of (1S,2S,4S)-4-ethenyl-5-methylcyclohexane-1,2-diol

Because the target structure contains the motif of a cyclohexane-1,2-diol, I suggest an approach including a Diels-Alder reaction (DA in the illustration below) of 1,3-butadiene and the commercially a …
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