Triethylamine → HCID 10856105, compound

1.21 ml (13.9 mmole) of propionyl chloride were added dropwise, whilst ice-cooling and under an atmosphere of nitrogen, to a solution of 1.46 g (11.7 mmole) of 2-mercapto-3-methylpyridine (prepared as described in Preparation 7) and 1.94 ml (13.9 mmole) of triethylamine in 15 ml of methylene chloride, and the resulting mixture was stirred for 1 hour. At the end of this time, the reaction mixture was mixed with 50 ml of methylene chloride, and the mixture was washed with a saturated aqueous solution of sodium hydrogencarbonate. It was then dried over anhydrous magnesium sulfate, and the solvent was removed by distillation under reduced pressure. The residue was purified by medium pressure column chromatography through silica gel, using a 5:1 by volume mixture of hexane and ethyl acetate as the eluent, to give 1.89 g (yield 89%) of the title compound as a light yellow oil.

1. washthe mixture was washed with a saturated aqueous solution of sodium hydrogencarbonate
2. dry with materialIt was then dried over anhydrous magnesium sulfate
3. customthe solvent was removed by distillation under reduced pressure
4. customThe residue was purified by medium pressure column chromatography through silica gel
5. additionby volume mixture of hexane and ethyl acetate as the eluent

ORD record

ord-f3791e9d03ed433895d2d1cde017dec1

Source dataset

uspto-grants-1998_02

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05719275