Tetrahedron Letters p. 6429 - 6432 (1987)
Update date:2022-08-05
Topics:
Hegmann, Joachim
Christl, Manfred
Peters, Karl
Peters, Eva-Maria
Schnering, Hans Georg von
The γ-oxoketenes, which are accessible from methyl 1,3,4-oxadiazin-6-one-2-carboxylate 1 and cycloalkenes, are shown to undergo an intramolecular <2+2> cycloaddition either on heating or on photolysis to give different stereoisomers of β-lactones of the 3-oxo-2-oxa-bicyclo<2.2.0>hexane-type.
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(2009)
