Helvetica Chimica Acta p. 180 - 184 (1990)
Update date:2022-08-03
Topics: Purification and characterization Introduction of the Azide Group
Hakimelahi, Gholam H.
Sardarian, Ali R.
The synthesis of some derivatives of the title compound VI is described.Bromination of diethyl(cis-3-azido-2-oxo-4-styrylazetidin-1-yl)(pyridin-2-yl)methylphosphonate (6) in MeOH gave tricyclic β-lactam 7, while similar bromination of diethyl(cis-3-azido-2-oxo-4-vinylazetidin-1-yl)(pyridin-2-yl)methylphosphonate (9) afforded tricyclic β-lactam 10.Mechanisms for these transformations are proposed (Schemes 1 and 2).
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(1993)
