The mechanism of the Brønsted acid-catalyzed aza-Darzens reaction is explored by charting the stereochemical outcome of the triflic acid-promoted conversion of trans-triazolines to cis-aziridines. These experiments are consistent with the intermediacy of an α-diazonium-β-amino ester intermediate.
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| http://dx.doi.org/10.1021/ol200313m | DOI Listing |
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