- AN EXPEDIENT ROUTE TO 1H-BENZIMIDAZOLES AND 1H-IMIDAZOPYRIDINES
-
1H-Benzimidazoles, 1H-imidazopyridines, and 1H-imidazopyridines can be synthesized readily by reaction of unisolated N-(1-chloroalkyl)pyridinium chlorides with 1,2-benzenediamines, 2,3-pyridinediamine, and 3,4-pyridinediamine, respectively.
- Eynde, Jean-Jacques Vanden,Mayence, Annie,Maquestiau, Andre,Anders, Ernst
-
p. 357 - 364
(2007/10/02)
-
- A new and convenient method for the preparation of 2-substituted quinazolines
-
Aldehydes, converted in situ into N-(1-chloroalkyl)pyridinium chlorides using thionyl chloride and pyridine, react with 2-aminobenzylamine, under mild conditions, to yield 1,2,3,4-tetrahydroquinazolines. The latter can be aromatized readily by treatment w
- Vanden Eynde,Godin,Mayence,Maquestiau,Anders
-
p. 867 - 869
(2007/10/02)
-
- Novel syntheses of heterocycles with N-(1-haloalkyl)azinium halides. Part 2. Preparation of N-unsubstituted 1,4-dihydropyridines
-
N-(1-Chloroalkyl)pyridinium chlorides, prepared from thionyl chloride, pyridine, and aldehydes, readily react with enaminocarbonyl derivatives to yield 1,4-dihydropyridines under mild and neutral conditions.
- Vanden Eynde,D'Orazio,Mayence,Maquestiau,Anders
-
p. 1263 - 1268
(2007/10/02)
-
- Novel synthese of heterocycles with N-(1-haloalkyl)azinium halides. Part 5. Preparation of N-substituted 1,4-dihydropyridines
-
Thirty N-substituted Hantzsch 1,4-dihydropyridines were prepared under mild and neutral conditions from N-substituted enaminocarbonyl derivatives and aldehydes activated under the form of N-(1-chloroalkyl)pyridinium chlorides by means of thionyl chloride
- Vanden Eynde,Mayence,Maquestiau,Anders
-
p. 3291 - 3304
(2007/10/02)
-
- NOVEL SYNTHESES OF HETEROCYCLES WITH N-(1-HALOALKYL)AZINIUM HALIDES: PART 6. PREPARATION OF 2,3,4,5,10,11-HEXAHYDRO-1H-DIBENZODIAZEPIN-1-ONES
-
Conversion of aldehydes into N-(1-chloroalkyl)pyridinium chlorides (by means of pyridine and thionyl chloride) and further reaction with 3-(2-aminophenyl)amino-5,5-dimethyl-2-cyclohexenone provide a novel and efficient route to the title compounds.
- Eynde, J. -J. Vanden,Mayence, A.,Maquestiau, A.,Anders E.
-
p. 801 - 806
(2007/10/02)
-