[reaction: see text] [RhCl(cod)](2) is an effective catalyst for the intramolecular conjugate addition of vinylstannanes to 2,3-dihydro-4-pyridones under neutral conditions at room temperature. The reaction occurs in good yields, giving indolizidine skeletons with excellent diastereoselectivity. A stereochemical outcome observed in these cyclizations is proposed.
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Dziedzic et al. (2005) studied this question.
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