Sodium Carbonate → methyl 3-[methyl(propan-2-yl)amino]-2-[1-[tris(propan-2-yl)silyl]-1H-pyrrol-3-yl]quinoxaline-6-carboxylate

HRID 1403476Notes

Reaction equation

HRID 1403476 reaction equation
Cl[C:2]1[C:11]([N:12]([CH3:16])[CH:13]([CH3:15])[CH3:14])=[N:10][C:9]2[C:4](=[CH:5][CH:6]=[C:7]([C:17]([O:19][CH3:20])=[O:18])[CH:8]=2)[N:3]=1.CC1(C)OB([C:27]2[CH:31]=[CH:30][N:29]([Si:32]([CH:39]([CH3:41])[CH3:40])([CH:36]([CH3:38])[CH3:37])[CH:33]([CH3:35])[CH3:34])[CH:28]=2)OC1(C)C.C(=O)([O-])[O-].[Na+].[Na+]>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>[CH3:16][N:12]([CH:13]([CH3:15])[CH3:14])[C:11]1[C:2]([C:27]2[CH:31]=[CH:30][N:29]([Si:32]([CH:36]([CH3:38])[CH3:37])([CH:39]([CH3:41])[CH3:40])[CH:33]([CH3:34])[CH3:35])[CH:28]=2)=[N:3][C:4]2[C:9]([N:10]=1)=[CH:8][C:7]([C:17]([O:19][CH3:20])=[O:18])=[CH:6][CH:5]=2

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 114509243-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(tris(propan-2-yl)silyl)-1H-pyrroleHCID 86667203Methyl 2-chloro-3-(isopropyl(methyl)amino)quinoxaline-6-carboxylate

Product 1

HCID 70664628methyl 3-[methyl(propan-2-yl)amino]-2-[1-[tris(propan-2-yl)silyl]-1H-pyrrol-3-yl]quinoxaline-6-carboxylateYield 53%

Reagents, catalysts & solvents 3

HCID 962WaterCatalystHCID 178418397HCID 178418397, compoundCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
90 °C

Procedure

To a solution of methyl 2-chloro-3-[methyl(propan-2-yl)amino]quinoxaline-6-carboxylate (150 mg, 0.51 mmol) in 1,4-dioxane (5.0 mL) and water (3 drops) was added 3-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1-[tris(propan-2-yl)silyl]-1H-pyrrole (356 mg, 1.02 mmol), Pd(PPh3)4 (29.4 mg, 0.03 mmol), and sodium carbonate (108.1 mg, 1.01 mmol) with stirring for 1 hour at 90° C. under an atmosphere of nitrogen. The resulting mixture was concentrated under vacuum to give a residue, which was purified by silica gel chromatography (1% ethyl acetate in petroleum ether) to give methyl 3-[methyl(propan-2-yl)amino]-2-[1-[tris(propan-2-yl)silyl]-1H-pyrrol-3-yl]quinoxaline-6-carboxylate as a yellow solid (130 mg, 53%).

Workup

  1. concentrationThe resulting mixture was concentrated under vacuum
  2. customto give a residue, which
  3. customwas purified by silica gel chromatography (1% ethyl acetate in petroleum ether)

Sources & evidence

ORD record
ord-8fb3d10eecdb44829f8fa895686c4f43
Source dataset
uspto-grants-2014_12
Patent number
US08912188B2

Reaction notes

Loading…