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FORMATION OF TETRAHYDROPYRROLO[1,2-C]PYRIMIDINES IN ACETYLENE REACTION WITH PIPERIDIN-4-ONE OXIMES Article PROSTAKOV N.S., VARLAMOV A.V., BORISOVA T.N., SERGEEVA N.D. Chemistry of Heterocyclic Compounds / KHIMIYA GETEROTSIKLICHESKIKH SOEDINENII. Латвийский институт органического синтеза Латвийской академии наук. 1987. P. 1286-1287