61. Synthesis of 2-Oxo-2H-oxadiazolo-pyrimidine-5-carbamates

DOI: 10.1002/hlca.19830660229

Source and publish data:

Helvetica Chimica Acta p. 669 - 672 (1983)

Update date:2022-08-05

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Authors:

Hengartner, Urs

Muller, Jean-Claude

Ramuz, Henri

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Article abstract of DOI:10.1002/hlca.19830660229

Thermal cyclization of the pyrimidine-N-oxide dicarbamate 2 gives a 95:5 mixture of the 2-oxo-2H-<1,2,4>oxadiazolo<2,3-a>- and <2,3-c>pyrimidinecarbamates 3 and 4.An efficient procedure for the conversion of 3 to 4, and vice versa, is described.

Full text of DOI:10.1002/hlca.19830660229

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