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We have reported recently a base-promoted regiospecific C2-epimerization of cis-4-oxoazetidine-2-carbaldehydes to trans-4-oxoazetidine-2-carbaldehydes. See: Alcaide, B.; Aly, M. F.; Rodriguez, C.; Rodríguez-Vicente, A. J. Org. Chem. 2000, 65, 3453.
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0842319782
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note
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Full spectroscopic and analytical data for compounds not included in this Experimental Section are described in the Supporting Information.
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