Sodium Bicarbonate → (R)-6'-Chloro-5'-fluoro-2-(3-hydroxypyrrolidin-1-yl)-N-(4-(trifluoromethoxy)phenyl)-[3,3'-bipyridine]-5-carboxamide

HRID 923871Notes

Reaction equation

HRID 923871 reaction equation
Br[C:2]1[C:3]([N:22]2[CH2:26][CH2:25][C@@H:24]([OH:27])[CH2:23]2)=[N:4][CH:5]=[C:6]([CH:21]=1)[C:7]([NH:9][C:10]1[CH:15]=[CH:14][C:13]([O:16][C:17]([F:20])([F:19])[F:18])=[CH:12][CH:11]=1)=[O:8].[Cl:28][C:29]1[C:34]([F:35])=[CH:33][C:32](B2OC(C)(C)C(C)(C)O2)=[CH:31][N:30]=1.C([O-])(O)=O.[Na+]>COCCOC.CCOC(C)=O.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[Cl:28][C:29]1[N:30]=[CH:31][C:32]([C:2]2[C:3]([N:22]3[CH2:26][CH2:25][C@@H:24]([OH:27])[CH2:23]3)=[N:4][CH:5]=[C:6]([C:7]([NH:9][C:10]3[CH:11]=[CH:12][C:13]([O:16][C:17]([F:18])([F:20])[F:19])=[CH:14][CH:15]=3)=[O:8])[CH:21]=2)=[CH:33][C:34]=1[F:35]

Participants

7

Reactant 3

HCID 516892Sodium BicarbonateHCID 533985412-Chloro-3-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridineHCID 86702593(R)-5-bromo-6-(3-hydroxypyrrolidin-1-yl)-N-(4-(trifluoromethoxy)phenyl)nicotinamide

Product 1

HCID 118195366(R)-6'-Chloro-5'-fluoro-2-(3-hydroxypyrrolidin-1-yl)-N-(4-(trifluoromethoxy)phenyl)-[3,3'-bipyridine]-5-carboxamide

Reagents, catalysts & solvents 3

HCID 178418476HCID 178418476, compoundCatalystHCID 80711,2-DimethoxyethaneSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
95 °C

Procedure

(R)-5-Bromo-6-(3-hydroxypyrrolidin-1-yl)-N-(4-(trifluoromethoxy)phenyl)nicotinamide (Stage 35.1, 300 mg, 0.672 mmol) and 2-chloro-3-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (346 mg, 1.345 mmol) were dissolved in DME (2.7 mL). A solution of 2 M NaHCO3 (1.01 mL, 2.03 mmol) was added, the RM was flushed with argon and Pd(PPh3)2Cl2 (56.6 mg, 0.081 mmol) was added. The RM was stirred under argon at 95° C. for 2 h in a capped pressure safe tube. After cooling to RT, the RM was dissolved in EtOAc, and washed with brine. The organic phase was dried over Na2SO4 and evaporated to dryness under reduced pressure. The crude product was purified by flash chromatography (RediSep® Silica gel column, DCM/MeOH from 2% to 5% MeOH), followed by a second purification (RediSep® Silica gel column, n-hexane/EtOAc, 50 to 100% EtOAc) and treatment with Si-Thiol (200 mg) in MeOH to afford the title compound as a white powder. HPLC (Condition 4) tR=5.63 min, UPLC-MS (Condition 7) m/z=497.1 [M+H]+; 1H-NMR (400 MHz, DMSO-d6) δ ppm 1.65-1.80 (m, 1H) 1.80-1.91 (m, 1H) 2.87 (d, J=10.56 Hz, 1H) 3.18-3.28 (m, 2H) 3.33-3.50 (m, 1H) 4.20 (br. s, 1H) 4.86 (d, J=3.52 Hz, 1H) 7.34 (d, J=8.99 Hz, 2H) 7.84 (d, J=8.99 Hz, 2H) 7.99-8.11 (m, 2H) 8.34 (s, 1H) 8.77 (d, J=2.35 Hz, 1H) 10.16 (s, 1H).

Workup

  1. additionwas added
  2. temperatureAfter cooling to RT
  3. washwashed with brine
  4. dry with materialThe organic phase was dried over Na2SO4
  5. customevaporated to dryness under reduced pressure
  6. customThe crude product was purified by flash chromatography (RediSep® Silica gel column, DCM/MeOH from 2% to 5% MeOH)
  7. customfollowed by a second purification (RediSep® Silica gel column, n-hexane/EtOAc, 50 to 100% EtOAc) and treatment with Si-Thiol (200 mg) in MeOH

Sources & evidence

ORD record
ord-80e463de15f14c24a3f9c98f19f8f7c3
Source dataset
uspto-grants-2016_03
Patent number
US09278981B2

Reaction notes

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