Tetrahedron p. 2223 - 2228 (1987)
Update date:2022-08-05
Topics:
Pavez, H.
Marquez, A.
Navarrete, S.
Tzichinovsky, S.
Rodriguez, H.
Δ4-1,2,4-Oxadiazolin-3-carboxylic acids, 3a-3i, were obtained by 1,3-dipolar cycloaddition between Δ2-oxazolin-5-ones, 1, and nitrosobenzene, 2.The reaction occurs regiospecifically at room temperature, the mesoionic form of 1 acting
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