Réaction #1509586

Équation de réaction

2-Methyl-6-oxo-1,6-dihydro-pyridine-3-carbonitrile

POCl3

→

title compound

6-Chloro-2-methyl-nicotinonitrile

Conditions de réaction

Traitement

1. 1
   Températurewas refluxed for 3 h
2. 2
   AutreThe reaction mixture was dried down in vacuum and ice
3. 3
   workup.ADDITIONwas added
4. 4
   ExtractionThe aqueous layer was extracted with EtOAc
5. 5
   AutreThe organic layer was separated
6. 6
   Autredried
7. 7
   Concentrationconcentrated in vacuum

Mode opératoire

A mixture of 2-Methyl-6-oxo-1,6-dihydro-pyridine-3-carbonitrile (44 g) and POCl3 (250 ml) was refluxed for 3 h. The reaction mixture was dried down in vacuum and ice followed by conc. aqueous ammonia (300 ml) was added. The aqueous layer was extracted with EtOAc. The organic layer was separated, dried and concentrated in vacuum affording the title compound (23.5 g, BP (18 mbar) 119-120° C.).

Source