Dichloromethane → HCID 59700030, compound

HRID 901398Notes

Reaction equation

HRID 901398 reaction equation
Br[C:2]1[CH:3]=[C:4]2[C:10]([C:11]3[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=3[O:17][CH3:18])=[CH:9][NH:8][C:5]2=[N:6][CH:7]=1.[CH3:19][C:20]1[C:24](B(O)O)=[C:23]([CH3:28])[O:22][N:21]=1.ClCCl.C(=O)([O-])[O-].[Na+].[Na+]>O.CO.ClCCl.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].C(#N)C>[CH3:19][C:20]1[C:24]([C:2]2[CH:3]=[C:4]3[C:10]([C:11]4[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=4[O:17][CH3:18])=[CH:9][NH:8][C:5]3=[N:6][CH:7]=2)=[C:23]([CH3:28])[O:22][N:21]=1

Participants

9

Reactant 4

HCID 6344DichloromethaneHCID 10340Sodium CarbonateHCID 27343463,5-Dimethylisoxazole-4-boronic acidHCID 596997875-Bromo-3-(2-methoxyphenyl)-1H-pyrrolo[2,3-b]pyridine

Product 1

HCID 59700030HCID 59700030, compoundYield 72%

Reagents, catalysts & solvents 4

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 962WaterSolventHCID 6342AcetonitrileSolventHCID 21226129Dichloromethane methanolSolvent

Procedure

To 5-bromo-3-(2-methoxy-phenyl)-1H-pyrrolo[2,3-b]pyridine (40 mg, 0.087 mmol), 3,5-dimethyl-isoxazole-4-boronic acid (16 mg, 0.114 mmol) and [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium (II), complex with dichloromethane (1:1) (4 mg, 0.0044 mmol) in a Smith process vial was added 0.6 mL of a 1:1 mixture of acetonitrile, and a 2 M solution of sodium carbonate in water. The reaction was run in a Personal Chemistry® microwave reactor at 165° C. for 1200 s. The reaction mixture was diluted with 1:1 methanol/dichloromethane, filtered, and the filtrate was adsorbed on silica gel. Purification on silica gel with a gradient of MeOH/CH2Cl2 afforded 5-(3,5-dimethyl-isoxazol-4-yl)-3-(2-methoxy-phenyl)-1H-pyrrolo[2,3-b]pyridine as beige crystals (20 mg, 71% yield). 1H NMR (500 MHz, DMSO-d6) δ 2.23 (s, 3H), 2.41 (s, 3H), 3.81 (s, 3H), 7.01 (dt, J=1.0, 7.0 Hz, 1H), 7.11 (dd, J=1.0, 8.0 Hz, 1H), 7.28 (dt, J=1.5, 7.0 Hz, 1H), 7.51 (dd, J=2.0, 8.0 Hz, 1H), 7.73 (d, J=3.0 Hz, 1H), 7.90 (d, J=1.5 Hz, 1H), 8.22 (d, J=2.0 Hz, 1H), 11.9 (s, 1H). MS: m/z 320 (M+H+).

Workup

  1. filtrationfiltered
  2. customPurification on silica gel with a gradient of MeOH/CH2Cl2

Sources & evidence

ORD record
ord-23a4fa80060a4b89a83859dd2781abdd
Source dataset
uspto-grants-2008_04
Patent number
US07361763B2

Reaction notes

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