Tetrahedron Letters p. 8787 - 8789 (2000)
Update date:2022-08-24
Topics:
Huang
Chiarelli
Rassat
The new oxaziridine nitroxide, 2,2,4,4,6-pentamethyl-7-oxa-1,3-diaza-bicyclo[4.1.0]heptan-3-oxyl, has been obtained in 90% yield by oxidation of 2,2,4,6,6-pentamethyl-1,2,5,6-tetrahydro-pyrimidine with MCPBA in ether. This nitroxide is stable in the solid state or in non-protic solvents. It was converted to the known 2,2,4,6,6-pentamethyl-1,2,5,6-tetrahydro-pyrimidine-1-oxyl by successive reduction with LiAlH4 and oxidation with Ag2O, with a reproducible yield of 16% from the starting tetra-hydropyrimidine. (C) 2000 Elsevier Science Ltd.
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