Pancholi AK, Geden JV, Clarkson GJ, Shipman M. Asymmetric Synthesis of 2-Substituted Azetidin-3-ones via Metalated SAMP/RAMP Hydrazones.
J Org Chem 2016;
81:7984-92. [PMID:
27447363 DOI:
10.1021/acs.joc.6b01284]
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Abstract
2-Substituted azetidin-3-ones can be prepared in good yields and enantioselectivities (up to 85% ee) by a one-pot procedure involving the metalation of the SAMP/RAMP hydrazones of N-Boc-azetidin-3-one, reaction with a wide range of electrophiles, including alkyl, allyl, and benzyl halides and carbonyl compounds, followed by hydrolysis using oxalic acid.
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