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. 2017 Sep 21;23(53):12991-12994.
doi: 10.1002/chem.201702545. Epub 2017 Aug 3.

Base-Mediated Generation of Ketenimines from Ynamides: Direct Access to Azetidinimines by an Imino-Staudinger Synthesis

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Base-Mediated Generation of Ketenimines from Ynamides: Direct Access to Azetidinimines by an Imino-Staudinger Synthesis

Eugénie Romero et al. Chemistry. .

Abstract

Ynamides were used as precursors for the in situ generation of highly reactive ketenimines that could be trapped with imines in a [2+2] cycloaddition. This imino-Staudinger synthesis led to a variety of imino-analogs of β-lactams, namely azetidinimines (20 examples), that could be further functionalized through a broad range of transformations.

Keywords: Staudinger synthesis; [2+2] cycloaddition; azetidinimines; ketenimines; ynamides.

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