Diisopropylethylamine → (2R)-4-{5-Fluoro-4-[4-(methylthio)phenyl]-2-oxopyridin-1(2H)-yl}-2-methyl-2-(methylsulfonyl)-N-(tetrahydro-2H-pyran-2-yloxy)butanamide

Participants

Role	Name	HCID	Charge
Reactant	Diisopropylethylamine	HCID 81531	—
Reactant	O-(Tetrahydropyran-2-yl)hydroxylamine	HCID 5142091	—
Reactant	Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)	HCID 9886157	—
Reactant	(2R)-4-{5-Fluoro-4-[4-(methylthio)phenyl]-2-oxopyridin-1(2H)-yl}-2-methyl-2-(methylsulfonyl)butanoic acid	HCID 70664819	—
Solvent	Dimethylformamide	HCID 6228	—
Solvent	Ethyl Acetate	HCID 8857	—
Product	(2R)-4-{5-Fluoro-4-[4-(methylthio)phenyl]-2-oxopyridin-1(2H)-yl}-2-methyl-2-(methylsulfonyl)-N-(tetrahydro-2H-pyran-2-yloxy)butanamide	HCID 86670639	100%

Reaction Steps

N,N-Diisopropylethylamine (450 uL, 2.45 mmol), O-(tetrahydro-2H-pyran-2-yl)hydroxylamine (192 mg, 1.64 mmol) and HATU (447 mg, 1.23 mmol) were added to a solution of (2R)-4-{5-fluoro-4-[4-(methylthio)phenyl]-2-oxopyridin-1(2H)-yl}-2-methyl-2-(methylsulfonyl)butanoic acid (339 mg, 0.82 mmol) in DMF (10 mL). The reaction was allowed to stir at rt for 18 h. The reaction mixture was diluted with EtOAc and washed with brine. The organics were dried (MgSO4), filtered and concentrated. The crude residue was purified via flash chromatography using a 40 g silica column and an eluent of EtOAc in n-heptane (0-100%) to afford the title compound (420 mg, 100%). MS (LCMS) m/z 511.4 (M−1).

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08624034B2
Source dataset	uspto-grants-2014_01
ORD ID	ord-13e78e5c20694fe69333687fcc617f35
Source note	uspto-grants-2014_01