Potassium Phosphate, Tribasic → HCID 70664758, compound

HRID 1403353Notes

Reaction equation

[CH3:1][N:2]1[C:10]2[C:5](=[CH:6][C:7](B(O)O)=[CH:8][CH:9]=2)[CH:4]=[N:3]1.Cl[C:15]1[C:24]([N:25]([CH:27]([CH3:29])[CH3:28])[CH3:26])=[N:23][C:22]2[C:17](=[CH:18][CH:19]=[C:20]([C:30]([O:32][CH3:33])=[O:31])[CH:21]=2)[N:16]=1.[O-]P([O-])([O-])=O.[K+].[K+].[K+]>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>[CH:27]([N:25]([CH3:26])[C:24]1[C:15]([C:7]2[CH:6]=[C:5]3[C:10](=[CH:9][CH:8]=2)[N:2]([CH3:1])[N:3]=[CH:4]3)=[N:16][C:17]2[C:22]([N:23]=1)=[CH:21][C:20]([C:30]([O:32][CH3:33])=[O:31])=[CH:19][CH:18]=2)([CH3:29])[CH3:28]

Participants

Conditions

Temperature: 90 °C

Procedure

To a solution of 1-methyl-1H-indazol-5-ylboronic acid (180 mg, 1.02 mmol) in dioxane (3 mL) was added methyl 2-chloro-3-(isopropyl(methyl)amino)quinoxaline-6-carboxylate (Scheme I, 109 mg, 0.37 mmol), K3PO4 (175 mg, 0.83 mmol), Pd(PPh3)4 (29 mg, 0.03 mmol) and water (3 drops) with stirring for 1 h at 90° C. in an oil bath with an inert atmosphere of nitrogen. The reaction mixture was concentrated under vacuum and then purified by a silica gel column with 10% ethyl acetate in petroleum ether to afford methyl 3-(isopropyl(methyl)amino)-2-(1-methyl-1H-indazol-5-yl)quinoxaline-6-carboxylate as a light yellow solid (110 mg, 76%).

Workup

concentrationThe reaction mixture was concentrated under vacuum
custompurified by a silica gel column with 10% ethyl acetate in petroleum ether

Sources & evidence

ORD record: ord-362257dea09344ae97cbf4a6b95b7aa6
Source dataset: uspto-grants-2014_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08912188B2

Reaction notes

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