Methyl nitroacetate and 3-nitropropionate in the synthesis of hexahydropyrimidines and piperidines
摘要:
Treatment of methyl nitroacetate and 3-nitropropionate with formaldehyde and primary amines under Mannich reaction conditions gives 5-nitrohexahydropyrimidines. In the case of methyl nitroacetate both the 5-nitrohexahydropyrimidine and isomeric 3,5-di(methoxycarbonyl)-1-methyl-3,5-dinitropiperidines are formed.