Water → 3,4,5-Triacetoxy-6-(2-vinyl-thiophen-3-yloxy)-tetrahydropyran-2-ylmethyl acetate

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Reaction Steps

3.30 g of 3,4,5-triacetoxy-6-(2-formyl-thiophen-3-yloxy)-tetrahydropyran-2-ylmethyl actate were dissolved in 60 ml of dioxane. 6.43 g of methyltriphenylphosphonium bromide, 5.37 g of potassium carbonate and 0.25 ml of water were added, and the solution was refluxed for 4 h. The solution was concentrated and purified by column filtration. 2.89 g of the product with the molecular weight: 456.47 (C20H24O10S), MS (ESI): 479.10 (M+Na+); 474.10 (M+NH4+) were obtained.

Provenance & Evidence