Phosphorus oxychloride → HCID 86664336, compound

Participants

Reaction Steps

A solution of 2.2 g (8.76 mmol) 2,4-diisopropyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid ethylester in POCl3 (43.8 ml) was stirred at 120° C. for 2 h. Then excess POCl3 was evaporated. The residue was dissolved in EtOAc (60 ml) and the solution was washed with a sat. NaHCO3 sol, water and brine. The organic layer was dried over Na2SO4 and concentrated in vacuo. Purification of this residue by CC (hexane/EtOAc 97:3) provided 2.0 g (7.43 mmol, 85%) 6-chloro-2,4-diisopropyl-pyridine-3-carboxylic acid ethylester.

Provenance & Evidence