Efficient synthesis of highly substituted indolizinones via iodocyclization and 1,2-shift.

[摘要]：The 5-endo-dig iodocyclization of propargylic alcs. followed by a 1,2-shift provided rapid access to 2-iodoindolizinones, while the 5-endo-trig iodocyclization of allylic alcs. and subsequent dehydroiodination and 1,2-shift led to indolizinones. A no. of highly substituted indolizinones were constructed under these mild reaction conditions.

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