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Publikováno v:
Tetrahedron Letters. 42:1793-1795
Difficulties in the nitration of 2-amino-6-chloro-4(3H)-pyrimidinone to give the widely used heterocyclic precursor 2-amino-6-chloro-5-nitro-4(3H)-pyrimidinone are shown to be due to formation of an unusual open-chain gem-dinitro compound, identified