(4+2)-cycloaddition of nitroalkenes with ynamines; formation of a 4H-1,2-oxazine 2-oxide derivative

M.L.M. Pennings, David Reinhoudt

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Abstract

The formation of a thermally unstable (4+2)-cycloadduct, a 4H-1,2-oxazine 2-oxide derivative ( ), from the reaction of 1-nitrocyclopentene with 1-phenyl-2-(1-pyrrolidinyl)acetylene has been proven by the structure elucidation of isoxazole derivative which results from thermal rearrangement and by the structure determination of the 1,3-dipolar adducts of with electron-deficient acetylenes.
Original languageUndefined
Pages (from-to)1781-1784
JournalTetrahedron letters
Volume21
Issue number18
DOIs
Publication statusPublished - 1980

Keywords

  • IR-68504

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