Tetrahedron Letters p. 675 - 678 (1996)
Update date:2022-07-30
Topics:
Ang, Kiah H.
Prager, Rolf H.
Smith, Jason A.
Weber, Ben
Williams, Craig M.
N-acylisoxazol-5-ones are converted into the corresponding 2-substituted oxazoles by photolysis at 300 or 254 nm, or by flash vacuum pyrolysis. The former procedure is favoured for isoxazolones with electron withdrawing groups at C-4, and pyrolysis for all others.
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