Potassium Phosphate, Tribasic → 2'-(2,8-dimethyl-3,4-dihydro-1H-pyrido[4,3-b]indol-5(2H)-yl)-N-methylbiphenyl-4-carboxamide

HRID 715195Notes

Reaction equation

HRID 715195 reaction equation
Br[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[N:8]1[C:16]2[CH:15]=[CH:14][C:13]([CH3:17])=[CH:12][C:11]=2[C:10]2[CH2:18][N:19]([CH3:22])[CH2:20][CH2:21][C:9]1=2.[CH3:23][NH:24][C:25](=[O:41])[C:26]1[CH:31]=[CH:30][C:29](B2OC(C)(C)C(C)(C)O2)=[CH:28][CH:27]=1.[O-]P([O-])([O-])=O.[K+].[K+].[K+]>CN(C=O)C.O>[CH3:22][N:19]1[CH2:20][CH2:21][C:9]2[N:8]([C:3]3[CH:4]=[CH:5][CH:6]=[CH:7][C:2]=3[C:29]3[CH:30]=[CH:31][C:26]([C:25]([NH:24][CH3:23])=[O:41])=[CH:27][CH:28]=3)[C:16]3[CH:15]=[CH:14][C:13]([CH3:17])=[CH:12][C:11]=3[C:10]=2[CH2:18]1

Participants

6

Reactant 3

HCID 62657Potassium Phosphate, TribasicHCID 17750267N-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamideHCID 673790385-(2-bromo-phenyl)-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

Product 1

HCID 673789482'-(2,8-dimethyl-3,4-dihydro-1H-pyrido[4,3-b]indol-5(2H)-yl)-N-methylbiphenyl-4-carboxamide

Reagents, catalysts & solvents 2

HCID 962WaterSolvent2×HCID 6228DimethylformamideSolvent

Conditions

Temperature
90 °C

Procedure

To a degassed solution of 5-(2-bromophenyl)-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (300 mg, 0.84 mmol), N-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide (328 mg, 1.27 mmol) and K3PO4 (445 mg, 0.706 mmol), in DMF (6 mL)-water (0.6 mL) was added dichlorobis(triphenylphosphine) palladium (II) (30 mg, 0.042 mmol). The reaction mixture was heated at 90° C. for 95 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 HPLC to yield 2′-(2,8-dimethyl-3,4-dihydro-1H-pyrido[4,3-b]indol-5(2H)-yl)-N-methylbiphenyl-4-carboxamide. 1H NMR (TFA salt, CD3OD) d (ppm): 7.57-7.78 (m, 5H), 7.4 (dd, 1H), 7.25 (s, 1H), 6.92-7.2 (m, 4H), 4.6 (m, 1H), 4.2 (m, 1H), 3.6 (m, 1H), 3.4 (m, 1H), 3.1 (m, 1H), 2.83 (m, 6H), 2.5 (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 HPLC

Sources & evidence

ORD record
ord-a1887357e133425aa79ac67be29ed067
Source dataset
uspto-grants-2015_11
Patent number
US09187471B2

Reaction notes

Loading…