Potassium Carbonate → HCID 67959919, compound

HRID 1529451Notes

Reaction equation

HRID 1529451 reaction equation
Cl[C:2]1[CH:7]=[C:6]([O:8][CH2:9][C:10]2[CH:15]=[CH:14][C:13]([O:16][CH3:17])=[CH:12][CH:11]=2)[N:5]=[C:4]([S:18]([CH3:21])(=[O:20])=[O:19])[N:3]=1.[Br:22][C:23]1[CH:24]=[C:25]2[C:29](=[CH:30][CH:31]=1)[N:28]([C:32]([O:34][C:35]([CH3:38])([CH3:37])[CH3:36])=[O:33])[CH:27]=[C:26]2B1OC(C)(C)C(C)(C)O1.C(=O)([O-])[O-].[K+].[K+]>O1CCOCC1.O.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>[Br:22][C:23]1[CH:24]=[C:25]2[C:29](=[CH:30][CH:31]=1)[N:28]([C:32]([O:34][C:35]([CH3:38])([CH3:37])[CH3:36])=[O:33])[CH:27]=[C:26]2[C:2]1[CH:7]=[C:6]([O:8][CH2:9][C:10]2[CH:15]=[CH:14][C:13]([O:16][CH3:17])=[CH:12][CH:11]=2)[N:5]=[C:4]([S:18]([CH3:21])(=[O:20])=[O:19])[N:3]=1

Participants

7

Reactant 3

HCID 11430Potassium CarbonateHCID 53217221tert-Butyl 5-bromo-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole-1-carboxylateHCID 59312818HCID 59312818, compound

Product 1

HCID 67959919HCID 67959919, compoundYield 41.4%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 218864351,4-Dioxane--water (1/1)Solvent

Conditions

Temperature
100 °C

Procedure

A glass microwave reaction vessel was charged with 4-chloro-6-(4-methoxybenzyloxy)-2-(methylsulfonyl)pyrimidine (600 mg, 1.825 mmol) and tert-butyl 5-bromo-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole-1-carboxylate (770 mg, 1.825 mmol) in p-dioxane/H2O (4:1, 6 mL) followed by Pd(PPh3)4 (105 mg, 0.091 mmol) and potassium carbonate (220 μL, 3.65 mmol). The reaction was stirred and heated in a Initiator microwave reactor (Personal Chemistry, Biotage AB, Inc., Upssala, Sweden) at 100° C. for 30 min. The mixture was diluted with water and extracted with DCM. The combined organic layers were dried, filtered and concentrated. The residue was purified with silica gel chromatography (eluting with 10-25% EtOAc in Hexanes) to give tert-butyl 5-bromo-3-(6-(4-methoxybenzyloxy)-2-(methylsulfonyl)pyrimidin-4-yl)-1H-indole-1-carboxylate (445 mg, 0.756 mmol, 41.4% yield) as a half solid. MS (ESI, pos. ion) m/z: 587.8 (M+1).

Workup

  1. customA glass microwave reaction vessel
  2. extractionextracted with DCM
  3. customThe combined organic layers were dried
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified with silica gel chromatography (eluting with 10-25% EtOAc in Hexanes)

Sources & evidence

ORD record
ord-3159ab1eca904ec3bea4681baafad83d
Source dataset
uspto-grants-2015_07
Patent number
US09090593B2

Reaction notes

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