140413-44-1Relevant articles and documents
Synthesis of some halogen- and nitro-substituted nicotinic acids and their fragmentation under electron impact
Dyadyuchenko,Strelkov,Mikhailichenko,Zaplishny
, p. 308 - 314 (2007/10/03)
Features of electrophilic and nucleophilic substitution under chlorination and nitration reactions conditions have been investigated for 6-hydroxy- and 6-methyl-substituted derivatives of 3-cyano-4-methyl-2(1H)-pyridones. The polychloro- and nitro-substituted 3-cyano-4-methylpyridines obtained were used as synthons in the synthesis of some polyhalo- and nitro-substituted nicotinic acids and their amides. The fragmentation pathways of the synthesized compounds under electron impact have been studied.
NUCLEOPHILIC SUBSTITUTION REACTIONS IN 2-CHLOROPYRIDINES AND 2,5-DIOXO-1,2,5,7-TETRAHYDRO-1H-FUROPYRIDINES
Kalme, Z. A.,Roloff, B.,Pelcher, Yu. E.,Popelis, Yu. Yu.,Khagen, F.,Dubur, G. Ya
, p. 1031 - 1035 (2007/10/02)
3-Cyano- and 3-carbamoyl-2-chloropyridines react with hydrazine hydrate to form substituted 3-amino-1H-pyrazolopyridines and 3-oxo-2,3-dihydro-1H-pyrazolopyridines.Hydrazine hydrate reacts with 3-carbamoyl-2-chloro-5-oxo-5,7-dihydrofuro3,4-