Triethylamine → 2-Fluoro-5-(5-methoxypyridin-3-ylethynyl)-N-methylbenzamide

HRID 606940Notes

Reaction equation

[C:1]([C:3]1[CH:4]=[N:5][CH:6]=[C:7]([O:9][CH3:10])[CH:8]=1)#[CH:2].[F:11][C:12]1[CH:21]=[CH:20][C:19](I)=[CH:18][C:13]=1[C:14]([NH:16][CH3:17])=[O:15].C(N(CC)CC)C>C1(C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)[Pd][P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.[Cu]I>[F:11][C:12]1[CH:21]=[CH:20][C:19]([C:2]#[C:1][C:3]2[CH:4]=[N:5][CH:6]=[C:7]([O:9][CH3:10])[CH:8]=2)=[CH:18][C:13]=1[C:14]([NH:16][CH3:17])=[O:15]

Participants

Conditions

Temperature: 60 °C

Procedure

Add bis(triphenylphosphine)palladium (II) dichloride (64 mg, 0.091 mmol), copper (I) iodide (35 mg, 0.19 mmol), and 3-ethynyl-5-methoxypyridine, (prepared as described in PREPARATION 10), (250 mg, 1.9 mmol) to a solution of 2-fluoro-5-iodo-N-methylbenzamide, (prepared as described in PREPARATION 39), (0.63 g, 2.3 mmol) in triethylamine (3.8 mL, 27.3 mmol) and heat at 60° C. for 16 h. Cool to room temperature and concentrate. Purify by silica gel chromatography, eluting with 100:0 to 10:90 dichloromethane:ethyl acetate, followed by a second silica gel chromatography eluting with 50:50 to 75:25 ethyl acetate:hexanes, to give the title compound as a white solid (390 mg, 73%).

Workup

temperatureCool to room temperature
concentrationconcentrate
customPurify by silica gel chromatography
washeluting with 100:0 to 10:90 dichloromethane
washeluting with 50:50 to 75:25 ethyl acetate

Sources & evidence

ORD record: ord-3a7a95c0274745b6acf7bd43e1d02e2a
Source dataset: uspto-grants-2011_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07915424B2

Reaction notes

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