Potassium Carbonate → 3-[1-(2,6-Dichloro-3-fluorophenyl)-ethyl]-5-(1,2,3,6-tetrahydropyridin-4-yl)-1H-pyrrolo[2,3-b]pyridine

HRID 2046922Notes

Reaction equation

HRID 2046922 reaction equation
Br[C:2]1[CH:3]=[C:4]2[C:10]([CH:11]([C:13]3[C:18]([Cl:19])=[CH:17][CH:16]=[C:15]([F:20])[C:14]=3[Cl:21])[CH3:12])=[CH:9][NH:8][C:5]2=[N:6][CH:7]=1.C(OC([N:29]1[CH2:34][CH:33]=[C:32](B2OC(C)(C)C(C)(C)O2)[CH2:31][CH2:30]1)=O)(C)(C)C.C(=O)([O-])[O-].[K+].[K+]>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.O1CCOCC1.O>[Cl:21][C:14]1[C:15]([F:20])=[CH:16][CH:17]=[C:18]([Cl:19])[C:13]=1[CH:11]([C:10]1[C:4]2[C:5](=[N:6][CH:7]=[C:2]([C:32]3[CH2:33][CH2:34][NH:29][CH2:30][CH:31]=3)[CH:3]=2)[NH:8][CH:9]=1)[CH3:12]

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 4642098Tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,6-tetrahydropyridine-1-carboxylateHCID 584314405-Bromo-3-[1-(2,6-dichloro-3-fluorophenyl)ethyl]-1H-pyrrolo[2,3-b]pyridine

Product 1

HCID 673640813-[1-(2,6-Dichloro-3-fluorophenyl)-ethyl]-5-(1,2,3,6-tetrahydropyridin-4-yl)-1H-pyrrolo[2,3-b]pyridine

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 218864351,4-Dioxane--water (1/1)Solvent

Conditions

Temperature
90 °C

Procedure

A mixture of 5-bromo-3-[1-(2,6-dichloro-3-fluorophenyl)ethyl]-1H-pyrrolo[2,3-b]pyridine (60.0 mg, 0.155 mmol), 4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester (95.6 mg, 0.309 mmol), Pd(PPh3)4 (40 mg, 0.03 mmol), potassium carbonate (64.1 mg, 0.464 mmol) and 4:1 dioxane/H2O (10 mL) was heated to 90° C. for 2 h. The solution was loaded into an SCX cartridge, washed with MeOH (30 mL) and ejected with 2M NH3 in MeOH (10 mL). The filtrate was concentrated in vacuo, redissolved in dioxane, and 4M HCl in dioxane (1 mL) was added. The solution was heated to 40° C. for 2 h. The material was loaded into an SCX cartridge, washed with MeOH (30 mL) and ejected with 2M NH3 in MeOH (10 mL). The filtrate was concentrated in vacuo, redissolved in MeOH (0.5 mL) and purified via HPLC. The fractions containing the pure product were concentrated in vacuo to afford the title compound as a white solid. 1H NMR (400 MHz, CD3OD): δ=1.88 (d, J=7.3 Hz, 3 H), 2.65-2.73 (m, 2 H), 3.45 (t, J=6.1 Hz, 2 H), 3.76-3.86 (m, 2 H), 5.28 (d, J=7.3 Hz, 1 H), 5.95 (dt, J=3.3, 1.7 Hz, 1 H), 7.19 (t, J=8.6 Hz, 1 H), 7.34 (d, J=2.3 Hz, 1 H), 7.36-7.50 (m, 2 H), 8.26 (d, J=2.0 Hz, 1 H). MS (ES+): m/z 390.00 (100) [MH+]. HPLC: tR=2.48 min (ZQ3, polar—5 min).

Workup

  1. washwashed with MeOH (30 mL)
  2. concentrationThe filtrate was concentrated in vacuo
  3. dissolutionredissolved in dioxane
  4. addition4M HCl in dioxane (1 mL) was added
  5. temperatureThe solution was heated to 40° C. for 2 h
  6. washwashed with MeOH (30 mL)
  7. concentrationThe filtrate was concentrated in vacuo
  8. dissolutionredissolved in MeOH (0.5 mL)
  9. custompurified via HPLC
  10. additionThe fractions containing the pure product
  11. concentrationwere concentrated in vacuo

Sources & evidence

ORD record
ord-1f8cd4288e954efc9c6fdbcd52d08cac
Source dataset
uspto-grants-2013_11
Patent number
US08592448B2

Reaction notes

Loading…