A general and useful palladium‐catalyzed [4 + 2] cycloaddition of sulfamate‐derived cyclic imines with γ‐methylidene‐δ‐valerolactones (or 2‐methylidenetrimethylene carbonate) is described. The developed strategy generated diverse sulfamate‐fused piperidine derivatives (or sulfamate‐fused 1,3‐oxazinane rings) in good yields.
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Huang et al. (2024) studied this question.
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