Abstract
AbstractA 1 : 1 CH2O/SO3 product has been prepared from sulfur trioxide and trioxane or paraformaldehyde in 1,2‐dichloroethane, which was different from methylene sulfate (a 1 : 1 CH2O/SO3 compound described in the literature).In contrast to methylene sulfate, the CH2O/SO3 product reacts with 1‐dodecene in 1,2‐dichloroethane at 10°C. The main reaction leads mainly to organic sulfates. The structures of the sulfates indicate that the CH2O/SO3 compound mainly reacts similar to a formaldehyde/(Lewis) acid complex (Prins‐type reaction). The major side‐reaction leads to sulfonates. This side‐reaction is similar to the reaction of 1‐dodecene with the dioxane/SO3 complex. Other side‐reactions are acid‐catalysed isomerizations and addition of sulfonic acids and organic sulfates to 1‐dodecene to give alkyl alkanesulfonates and dialkyl sulfates.
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