2-(4-Hydroxyphenyl)-3-hydroxymethyl-1,4-benzodioxane-6-aldehyde 8,the key intermediate of sinaiticin 10,was synthesized in 6 step from caffeic acid 4 and 4- hydroxybenzsaldehyde 1.the coupling reaction is the key step.
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机译：stereoselective synthesis of (2 Z,4 E)-2,4-pentadien-1-ols via sequential 1,4-elimination reaction and [1,2]-wittig rearrangement starting from (E)-4-alkoxy-2-butenyl benzoates
