A facile preparation of 4-alkylidene-3-tosyloxazolidin-2-ones from propargylic alcohols and p-toluenesulfonyl isocyanate using a cuprous iodide/triethylamine catalyst
Oxazolidinones constitute an important class of heterocyclic compounds' that are widely used in the industrial? pharmaceutical? and agricultural4 fields as well as in organic synthesis. In particular, the preparation of 4-alkylideneoxazolidinones has generated considerable interest since they generate useful heterocycles such as 3H-indoles, which are intermediates in the synthesis of dyestuffs. 2b
