Dimethylformamide → {[1-(3,4-Difluoro-benzyl)-2-oxo-1,2-dihydro-pyridine-3-carbonyl]-amino}-thiophen-2-yl-acetic acid

Participants

Role	Name	HCID	Charge
Reactant	Dimethylformamide	HCID 6228	—
Reactant	Diisopropylethylamine	HCID 81531	—
Reactant	2-Thiopheneacetic acid, alpha-amino-, (-)-	HCID 89435	—
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	1-(3,4-Difluorobenzyl)-2-oxo-1,2-dihydropyridine-3-carboxylic acid	HCID 53427969	—
Product	{[1-(3,4-Difluoro-benzyl)-2-oxo-1,2-dihydro-pyridine-3-carbonyl]-amino}-thiophen-2-yl-acetic acid	HCID 68609732	—

Reaction Steps

1-(3,4-Difluoro-benzyl)-2-oxo-1,2-dihydro-pyridine-3-carboxylic acid (0.23 g, 0.00088 mol;) was dissolved in N,N-Dimethylformamide (9 mL, 0.1 mol;) and N,N-Diisopropylethylamine (800 uL, 0.004 mol;), and N,N,N′,N′-Tetramethyl-O-(7-azabenzotriazol-1-yl)uronium Hexafluorophosphate (0.37 g, 0.00097 mol;) were added. After 5 minutes preactivation Amino-thiophen-2-yl-acetic acid (0.266 g, 0.00169 mol;) was added. Workup consisted of rinsing with 5% citric acid then brine after dissolving the crude in ethyl acetate. The organic layer was then dried with magnesium sulfate and concentrated. The crude material was brought on directly to the next step. ES (+) MS m/e=404.81

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08778977B2
Source dataset	uspto-grants-2014_07
ORD ID	ord-77a74c3d608d4e909e1c6e502de692a2
Source note	uspto-grants-2014_07