Potassium Carbonate → 3-(4-Aminophenyl)-5-bromopyridin-2-amine

HRID 1428078Notes

Reaction equation

CC1(C)C(C)(C)OB([C:9]2[CH:15]=[CH:14][C:12]([NH2:13])=[CH:11][CH:10]=2)O1.C(=O)([O-])[O-].[K+].[K+].[Br:23][C:24]1[CH:25]=[C:26](I)[C:27]([NH2:30])=[N:28][CH:29]=1>O1CCOCC1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[NH2:13][C:12]1[CH:11]=[CH:10][C:9]([C:26]2[C:27]([NH2:30])=[N:28][CH:29]=[C:24]([Br:23])[CH:25]=2)=[CH:15][CH:14]=1

Participants

Conditions

Temperature: 100 °C

Procedure

Tetrakis(triphenylphosphine)palladium (1.16 g), 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (2.48 g) and potassium carbonate (4.15 g) were added to a solution of 5-bromo-3-iodopyridin-2-amine (2.99 g) in 1,4-dioxane (40 ml) and water (10 ml) at room temperature. The reaction mixture was stirred at 100° C. overnight. The reaction mixture was concentrated under reduced pressure, and the residue was then purified by silica gel chromatography [chloroform:methanol=9:1 (v/v)] to give 2.48 g of the title compound as a solid.

Workup

concentrationThe reaction mixture was concentrated under reduced pressure
customthe residue was then purified by silica gel chromatography [chloroform:methanol=9:1 (v/v)]

Sources & evidence

ORD record: ord-105bd7ce4f15417db50bdf013dd1281d
Source dataset: uspto-grants-2015_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08933103B2

Reaction notes

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