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68. Thermal Cyclization of 2-Acyl-1-azido-3-phenalenones to phenaleno[3,4-a]isoxazol-7-ones (Organic azides in heterocyclic synthesis, 24)
Stadlbauer W., Fischer M., J. Heterocyclic Chem., 943-947 (1998)

Abstract: 3-Azido-1-phenalenones with acylsubstituents at position 2 gave isoxazolo[3,4-a]phenalen-7-ones. The reaction conditions were studied by means of DSC (differential scanning calorimetry).


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