Sodium Carbonate → 2-((3S,4S)-3-Amino-4-hydroxypyrrolidin-1-yl)-N-(4-(chlorodifluoromethoxy)phenyl)-5'-fluoro-[3,3'-bipyridine]-5-carboxamide

HRID 924131Notes

Reaction equation

HRID 924131 reaction equation
Cl[C:2]1[C:7]([C:8]2[CH:9]=[N:10][CH:11]=[C:12]([F:14])[CH:13]=2)=[CH:6][C:5]([C:15]([NH:17][C:18]2[CH:23]=[CH:22][C:21]([O:24][C:25]([Cl:28])([F:27])[F:26])=[CH:20][CH:19]=2)=[O:16])=[CH:4][N:3]=1.CCN(C(C)C)C(C)C.[NH2:38][C@H:39]1[CH2:43][NH:42][CH2:41][C@@H:40]1[OH:44].C([O-])([O-])=O.[Na+].[Na+]>CC(O)C>[NH2:38][C@@H:39]1[C@@H:40]([OH:44])[CH2:41][N:42]([C:2]2[C:7]([C:8]3[CH:9]=[N:10][CH:11]=[C:12]([F:14])[CH:13]=3)=[CH:6][C:5]([C:15]([NH:17][C:18]3[CH:19]=[CH:20][C:21]([O:24][C:25]([Cl:28])([F:26])[F:27])=[CH:22][CH:23]=3)=[O:16])=[CH:4][N:3]=2)[CH2:43]1

Participants

6

Reactant 4

HCID 10340Sodium CarbonateHCID 81531DiisopropylethylamineHCID 10559158(3S,4S)-4-Aminopyrrolidin-3-olHCID 722015872-Chloro-N-(4-(chlorodifluoromethoxy)phenyl)-5'-fluoro-[3,3'-bipyridine]-5-carboxamide

Product 1

HCID 1181953932-((3S,4S)-3-Amino-4-hydroxypyrrolidin-1-yl)-N-(4-(chlorodifluoromethoxy)phenyl)-5'-fluoro-[3,3'-bipyridine]-5-carboxamide

Reagents, catalysts & solvents 1

HCID 3776IsopropanolSolvent

Conditions

Temperature
80 °C

Procedure

2-Chloro-N-(4-(chlorodifluoromethoxy)phenyl)-5′-fluoro-[3,3′-bipyridine]-5-carboxamide (Stage 266.1, 70 mg, 0.160 mmol) and DIPEA (0.196 mL, 1.121 mmol) were added to a vial containing iPrOH (2 mL). (3S,4S)-4-Aminopyrrolidin-3-ol (30 mg, 0.168 mmol) was added. The mixture was stirred at 80° C. for 44 h. The RM was treated with sat. aq. Na2CO3 (20 mL) and extracted with EtOAc. The combined extracts were washed with brine (10 mL), dried over Na2SO4, filtered and evaporated to dryness under reduced to give the crude product which was purified by flash chromatography (Silica gel column, 4 g, DCM/MeOH, from 95:5 to 8:2) to afford the title product as a beige solid. HPLC (Condition 10) tR=5.83 min, UPLC-MS (Condition 3) tR=0.81 min, m/z=494.2/496.2 [M+H]+; 1H-NMR (400 MHz, DMSO-d6) δ ppm 2.91 (dd, J=11.53, 2.93 Hz, 1H) 3.22-3.28 (m, 1H) 3.36-3.46 (m, 2H) 3.59-3.66 (m, 1H) 4.02-4.08 (m, 1H) 5.48 (d, J=3.91 Hz, 1H) 7.35 (d, J=8.60 Hz, 2H) 7.87 (m, J=9.00 Hz, 3H) 8.13 (d, J=2.35 Hz, 1H) 8.55 (s, 1H) 8.64 (d, J=2.74 Hz, 1H) 8.79-8.83 (m, 1H) 10.22 (s, 1H).

Workup

  1. extractionextracted with EtOAc
  2. washThe combined extracts were washed with brine (10 mL)
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. customevaporated to dryness
  6. customto give the crude product which
  7. customwas purified by flash chromatography (Silica gel column, 4 g, DCM/MeOH, from 95:5 to 8:2)

Sources & evidence

ORD record
ord-64fcad3b72f143a0936ffff85d153a8b
Source dataset
uspto-grants-2016_03
Patent number
US09278981B2

Reaction notes

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