Journal of the Chemical Society. Perkin transactions I p. 2888 - 2889 (1991)
Update date:2022-07-30
Topics:
Begue, Jean-Pierre
Bonnet-Delpon, Daniele
Lequeux, Thierry
The 1,3-dipolar cycloaddition between ethyl trifluoroacetoacetate and N-(benzylidene)methylamine N-oxide, performed in boiling toluene, leads regio- and stereo-selectively to an isoxazolidine, while the corresponding ethyl acetoacetate is found to be unreactive under the same conditions.On the other hand, α-trifluoromethylstyrene behaves as α-methylstyrene and affords two diastereoisomeric trifluoromethyl-substituted cycloadducts.
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