Water → 5-(3-(6-fluoropyridin-3-yl)phenyl)-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

HRID 715175Notes

Reaction equation

HRID 715175 reaction equation
Br[C:2]1[CH:3]=[C:4]([N:8]2[C:16]3[CH:15]=[CH:14][C:13]([CH3:17])=[CH:12][C:11]=3[C:10]3[CH2:18][N:19]([CH3:22])[CH2:20][CH2:21][C:9]2=3)[CH:5]=[CH:6][CH:7]=1.[F:23][C:24]1[CH:29]=[CH:28][C:27](B2OC(C)(C)C(C)(C)O2)=[CH:26][N:25]=1.C([O-])([O-])=O.[K+].[K+].O>COCCOC.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>[F:23][C:24]1[N:25]=[CH:26][C:27]([C:2]2[CH:3]=[C:4]([N:8]3[C:16]4[CH:15]=[CH:14][C:13]([CH3:17])=[CH:12][C:11]=4[C:10]4[CH2:18][N:19]([CH3:22])[CH2:20][CH2:21][C:9]3=4)[CH:5]=[CH:6][CH:7]=2)=[CH:28][CH:29]=1

Participants

7

Reactant 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 121772222-Fluoropyridine-5-boronic acid pinacol esterHCID 673785245-(3-bromophenyl)-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

Product 1

HCID 533715855-(3-(6-fluoropyridin-3-yl)phenyl)-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 80711,2-DimethoxyethaneSolvent

Conditions

Temperature
90 °C

Procedure

To a de-aerated solution of 5-(3-bromophenyl)-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (100 mg, 0.281 mmol), 2-fluoropyridine-5-boronic acid pinacol ester (125 mg, 0.560 mmol) and K2CO3 (120 mg, 0.845 mmol) in DME (4 mL)-water (2 mL) was added Pd(PPh3)4 (16 mg, 0.013 mmol). The reaction mixture was stirred at 90° C. for 45 min. The solvent was removed under reduced pressure, residue diluted with water (20 mL) and extracted with EtOAc (50 mL). The organic layer was dried over anhydrous sodium sulfate, concentrated under reduced pressure to obtain crude, which was purified by reverse phase HPLC to yield 5-(3-(6-fluoropyridin-3-yl)phenyl)-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole. 1H NMR (TFA salt, CD3OD) d (ppm): 8.5 (s, 1H), 8.21 (dd, 1H), 7.72 (m, 2H), 7.62 (s, 1H), 7.5 (d, 1H), 7.3 (s, 1H), 7.17 (m, 2H), 7.06 (d, 1H), 4.8 (d, 1H), 4.4 (d, 1H), 3.8 (m, 1H), 3.56 (m, 1H), 3.21 (m, 1H), 3.18 (s, 3H), 3.1 (m, 1H), 2.4 (s, 3H).

Workup

  1. customThe solvent was removed under reduced pressure, residue
  2. additiondiluted with water (20 mL)
  3. extractionextracted with EtOAc (50 mL)
  4. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customto obtain crude, which
  7. customwas purified by reverse phase HPLC

Sources & evidence

ORD record
ord-f11a37690f644c94814a823b567ec8de
Source dataset
uspto-grants-2015_11
Patent number
US09187471B2

Reaction notes

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