Highly polarized enamines. 2. Synthesis and investigation of the further amination of derivatives of ?,?-DIAMINO-?-cyano-?-nitroethylene
作者:V. A. Makarov、A. L. Sedov、O. S. Anisimova、V. G. Granik
DOI:10.1007/bf01164870
日期:1996.6
Heterocyclic studies. Part XXXI. New routes to reduced imidazole, pyrimidine, and pyridopyrimidine derivatives
作者:Jim Clark、Michael Curphey、Ian W. Southon
DOI:10.1039/p19740001611
日期:——
amino)-3-amino-2-nitroacrylonitrile derivatives. Cyclisation of 4-(N-alkyl-2-chloroethylamino)-6-chloro-5-nitropyrimidines gave imidazopyrimidines which were immediately cleaved to give dihydroimidazoles with a 2-[cyano(nitro)methylene] substituent. Similarly 4-(N-alkyl-3-hydroxypropylamino)-pyrimidines gave pyrimidopyrimidines which were cleaved to give reducedpyrimidines. Hexahydropyridopyrimidines were