Triethylamine → N-Isopropyl-1-[3-(3-hydroxy-3-phenylbut-1-ynyl)phenyl]-1,4-dihydro [1,8]naphthyridin-4-one-3-carboxamide

Participants

Role	Name	HCID	Charge
Reactant	Triethylamine	HCID 8471	—
Reactant	3-Hydroxy-3-phenyl-1-butyne	HCID 92098	—
Reactant	1-(3-bromophenyl)-N-isopropyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxamide	HCID 12991318	—
Catalyst	Palladium Chloride	HCID 24290	—
Catalyst	Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)	HCID 24350	—
Catalyst	Ferrocene-1,1'-bis-(diphenylphosphine)	HCID 635956	—
Solvent	Dimethylformamide	HCID 6228	—
Product	N-Isopropyl-1-[3-(3-hydroxy-3-phenylbut-1-ynyl)phenyl]-1,4-dihydro [1,8]naphthyridin-4-one-3-carboxamide	HCID 10161154	—

Reaction Conditions

Temperature	85 °C

Reaction Steps

A mixture of N-isopropyl-1-(3-bromophenyl)-1,4-dihydro[1,8]naphthyridin-4-one-3-carboxamide from Step 4 of EXAMPLE 1, 2-phenyl-3-butyn-2-ol (2 eq), triethylamine (1.66 eq), bis(diphenylphosphino)ferrocene]dichloropalladium(II) (0.05 eq), and copper(I) iodide (5 mg/mmol) in DMF (20 ml/mmol) was heated at 85° C. for 18 hours. After cooling to room temperature, the resulting mixture was quenched with saturated aqueous ammonium chloride solution and partitioned between ethyl acetate and water. The crude product from the organic phase was chromatographed on silica gel eluting with 20% ether in methylene chloride. The purified product was stirred in ether at room temperature for 3 hours and filtered to afford the title compound as a white solid.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US06743802B2
Source dataset	uspto-grants-2004_06
ORD ID	ord-dd67d90dc91049d59b4870fc9e136467
Source note	uspto-grants-2004_06