Alkyl-3-nitroacrylates in Reactions with Semicarbazide
The reactions of alkyl-3-nitroacrylates with semicarbazide as representative of polynitrogen nucleophiles proceeds at room temperature in a solution of glacial acetic acid and leads to aza-Michael adducts. Their structure was proved by <sup>1</sup>H, <sup>13</sup>C{<sup>1</sup>H} NMR and IR spectroscopy methods.