P-Anisidine → HCID 86706286, compound

HRID 2205873Notes

Reaction equation

HRID 2205873 reaction equation
Br[C:2]1[N:7]=[CH:6][C:5]2[CH:8]=[C:9]([C:18]3[CH:19]=[N:20][N:21]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[CH:22]=3)[N:10]([C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[C:4]=2[CH:3]=1.[CH3:30][O:31][C:32]1[CH:38]=[CH:37][C:35]([NH2:36])=[CH:34][CH:33]=1.C(=O)([O-])[O-].[Cs+].[Cs+].CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2>C(Cl)(Cl)Cl.O1CCOCC1>[C:26]([O:25][C:23]([N:21]1[CH:22]=[C:18]([C:9]2[N:10]([C:11]([O:13][C:14]([CH3:16])([CH3:15])[CH3:17])=[O:12])[C:4]3[CH:3]=[C:2]([NH:36][C:35]4[CH:37]=[CH:38][C:32]([O:31][CH3:30])=[CH:33][CH:34]=4)[N:7]=[CH:6][C:5]=3[CH:8]=2)[CH:19]=[N:20]1)=[O:24])([CH3:27])([CH3:29])[CH3:28]

Participants

7

Reactant 4

HCID 7732P-AnisidineHCID 10796Cesium carbonateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 86706270HCID 86706270, compound

Product 1

HCID 86706286HCID 86706286, compoundYield 68%

Reagents, catalysts & solvents 2

HCID 6212ChloroformSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
80 °C

Procedure

To tert-butyl 6-bromo-2-(1-(tert-butoxycarbonyl)-1H-pyrazol-4-yl)-1H-pyrrolo[3,2-c]pyridine-1-carboxylate (10) (50 mg, 0.108 mmole) was added 4-methoxyaniline (16 mg, 0.129 mmole, 1.2 eq) followed by cesium carbonate (70 mg, 0.216 mmole, 2 eq) and Xantphos (6.2 mg, 0.0108 mmole, 10 mole %). Dioxane (1.2 mL) was added and the flask flushed twice with nitrogen. Pd2(dba)3 complex (5 mg, 0.0054 mmole, 5 mole %) was added and the flask was flushed again with nitrogen (×3) and heated at 80° C. for 2 hours. The reaction was cooled and diluted with ethyl acetate (10 mL). The solution was washed with water (3 mL) and with brine, dried and evaporated to leave a gum. This was applied in chloroform to a 1 mm, 20×20 cm silica prep plate which was eluted with 9:1 dichloromethane:ethyl acetate. The product band was recovered with acetone. Solution evaporated and residue azeotroped with ethanol to leave the title compound (37 mg, 68%). 1H-NMR (d6-DMSO, 500 MHz): δ 1.45 (s, 9H), 1.60 (s, 9H), 3.72 (s, 3H), 6.78 (d, J=0.63 Hz, 1H), 6.87 (d, J=9.14 Hz, 2H), 7.39 (t, J=0.95 Hz, 1H), 7.48 (d, J=9.14 Hz, 2H), 8.02 (d, J=0.63 Hz, 1H), 8.41 (d, J=0.95 Hz, 1H), 8.43 (d, J=0.63 Hz, 1H), 8.73 (br s, 1H).

Workup

  1. customthe flask flushed twice with nitrogen
  2. additionPd2(dba)3 complex (5 mg, 0.0054 mmole, 5 mole %) was added
  3. customthe flask was flushed again with nitrogen (×3)
  4. temperatureThe reaction was cooled
  5. additiondiluted with ethyl acetate (10 mL)
  6. washThe solution was washed with water (3 mL) and with brine
  7. customdried
  8. customevaporated
  9. customto leave a gum
  10. washwas eluted with 9:1 dichloromethane
  11. customThe product band was recovered with acetone
  12. customSolution evaporated
  13. customresidue azeotroped with ethanol

Sources & evidence

ORD record
ord-5003321353ef4180acc10bdab4e84f9b
Source dataset
uspto-grants-2016_06
Patent number
US09371319B2

Reaction notes

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