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Acetals and Ethers, XVII: One- or Two-Step Syntheses of 2-(2-Alkoxyethyl)-1,3-dioxacyclanes
Piasecki, Andrzej
, p. 1287 - 1294 (2007/10/02)
2-(2-Alkoxyethyl)-1,3-dioxanes (1) were prepared by a p-toluenesulfonic acid-catalyzed, one-step reaction of propenal with a mixture of aliphatic alcohol and trimethylene glycol in good yields.The transacetalization reaction of 1,1,3-trialkoxypropanes (3) with ethylene glycol or propylene-(1,2)glycol afforded good yields of pure 2-(2-alkoxyethyl)-1,3-dioxolanes (5 or 6), respectively.This reaction proceeds through an intermediate 1,3-dialkoxy-1-(2-hydroxyalkoxy)-propane. - Keywords: 2-(2-Alkoxyethyl)-1,3-dioxane; 2-(2-Alkoxyethyl)-1,3-dioxolane; 2-(2-Alkoxyethyl)-4-me thyl-1,3-dioxolane; 1,3-Dialkoxy-1-(2-hydroxyalkoxy)-propane; Transacetalizations reaction
