Potassium Phosphate, Tribasic → HCID 67379012, compound

HRID 1499058Notes

Reaction equation

HRID 1499058 reaction equation
Br[C:2]1[C:3]([N:7]2[C:15]3[CH:14]=[CH:13][C:12]([CH3:16])=[CH:11][C:10]=3[C:9]3[CH2:17][N:18]([CH3:21])[CH2:19][CH2:20][C:8]2=3)=[CH:4][S:5][CH:6]=1.[N:22]1[CH:27]=[CH:26][CH:25]=[C:24](B(O)O)[CH:23]=1.[O-]P([O-])([O-])=O.[K+].[K+].[K+]>CN(C=O)C.O.O>[CH3:21][N:18]1[CH2:19][CH2:20][C:8]2[N:7]([C:3]3[C:2]([C:24]4[CH:23]=[N:22][CH:27]=[CH:26][CH:25]=4)=[CH:6][S:5][CH:4]=3)[C:15]3[CH:14]=[CH:13][C:12]([CH3:16])=[CH:11][C:10]=3[C:9]=2[CH2:17]1

Participants

6

Reactant 3

HCID 62657Potassium Phosphate, TribasicHCID 27343783-Pyridinylboronic acidHCID 67373536HCID 67373536, compound

Product 1

HCID 67379012HCID 67379012, compoundYield 25.3%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 21962138N,N-Dimethylformamide--water (1/1)Solvent

Conditions

Temperature
95 °C

Procedure

To a de-aerated solution of 5-(4-bromo-thiophen-3-yl)-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (160 mg, 0.44 mmol), 3-pyridinylboronic acid (81.9 mg, 0.66 mmol) and K3PO4 (235 mg, 1.11 mmol) in DMF-water (4.5:0.5 mL) was added dichlorobis(triphenylphosphine) palladium (II) (15.5 mg, 5 mol %). The reaction mixture was heated at 95° C. for 30 min under nitrogen atmosphere. The reaction mixture was diluted with water and extracted with EtOAc. The organic layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure to afford crude material, which was purified by reverse phase HPLC to yield 2,8-dimethyl-5-(4-pyridin-3-yl-thiophen-3-yl)-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (40 mg). 1H NMR (Oxalate salt, CD3OD) δ (ppm): 8.35 (bs, 1H), 8.10 (bs, 1H), 7.95 (s, 1H), 7.8 (s, 1H), 7.45 (bs, 1H), 7.3-7.2 (m, 2H), 6.95 (d, 1H), 6.9 (d, 1H), 4.5 (bs, 2H), 3.6-3.45 (m, 2H), 3.15-3.05 (m, 1H), 3.0 (s, 3H), 2.65-2.59 (m, 1H), 2.4 (s, 3H).

Workup

  1. extractionextracted with EtOAc
  2. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  3. concentrationconcentrated under reduced pressure
  4. customto afford crude material, which
  5. customwas purified by reverse phase HPLC

Sources & evidence

ORD record
ord-1222927ed5024ae78a757438eb4b3638
Source dataset
uspto-grants-2015_12
Patent number
US09199985B2

Reaction notes

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