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Treatment of γ‐disubstituted β,γ‐unsaturated hydroxamates with bis(collidine)bromine(I) hexafluorophosphate led mainly to the formation of cyclic bromo imidates – the thermodynamic products. Unsaturated cyclic imidates were then obtained by treatment with triethylamine. With γ‐aryl β,γ‐unsaturated hydroxamates, the corresponding cyclic bromo imidates were also obtained. On treatment with triethylamine,...