Acid-Catalyzed Oxy-aminomethylation of Styrenes
ACS catalysis(2024)
摘要
We report a strong Bronsted acid-catalyzed three-component oxy-aminomethylation of styrenes with sym-trioxane and sulfonamides or carbamates. This transformation provides a variety of 1,3-oxazinanes in moderate to good yields under mild reaction conditions. The obtained heterocycles can be readily transformed into the corresponding 1,3-amino alcohols, which are useful building blocks for the synthesis of pharmaceutically relevant molecules. Mechanistic studies suggest the intermediacy of an in situ formed 1,3,5-dioxazinane and a subsequent reaction with the olefin.
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关键词
olefin,sym-trioxane,sulfonamide,carbamate,aminoalcohol,aza-Prins reaction,iminium ion
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