Hydrochloric Acid → HCID 90314496, compound

HRID 515074Notes

Reaction equation

HRID 515074 reaction equation
[F:1][C:2]1[CH:10]=[C:9]([C:11]([F:14])([F:13])[F:12])[CH:8]=[C:7]([C:15]([F:18])([F:17])[F:16])[C:3]=1[C:4](Cl)=[O:5].[NH2:19][C:20]1[CH:21]=[CH:22][C:23]([C:26]([O:28][CH3:29])=[O:27])=[N:24][CH:25]=1.N1C=CC=CC=1.Cl>ClCCl>[F:1][C:2]1[CH:10]=[C:9]([C:11]([F:14])([F:13])[F:12])[CH:8]=[C:7]([C:15]([F:18])([F:17])[F:16])[C:3]=1[C:4]([NH:19][C:20]1[CH:21]=[CH:22][C:23]([C:26]([O:28][CH3:29])=[O:27])=[N:24][CH:25]=1)=[O:5]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 1049PyridineHCID 12457877Methyl 5-aminopyridine-2-carboxylateHCID 467375822-Fluoro-4,6-bis(trifluoromethyl)benzoyl chloride

Product 1

HCID 90314496HCID 90314496, compoundYield 61.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent3×

Procedure

A solution of 2-fluoro-4,6-bis(trifluoromethyl)benzoyl chloride (1.0 g, 3.39 mmol) and dichloromethane (5.0 mL) was added drop-wise to a mixture of methyl 5-aminopyridine-2-carboxylate (619.9 mg, 4.07 mmol), pyridine (824.1 μL, 10.18 mmol) in dichloromethane (20.00 mL) at 0° C. The mixture was allowed to warm to room temperature and was stirred at that temperature overnight. The mixture was poured into 1N HCl and dichloromethane. The layers were separated and the organic layer was dried over sodium sulfate, filtered and concentrated under reduced pressure to give a tan solid. The product was purified on column chromatography eluting with 10-100% ethyl acetate in hexanes to obtain methyl 5-[[2-fluoro-4,6-bis(trifluoromethyl)benzoyl]amino]pyridine-2-carboxylate (850 mg, 61%) as a white solid. ESI-MS m/z calc. 410.05, found 411.0 (M+1)+; Retention time: 0.62 minutes (3 minutes run). 1H NMR (400 MHz, DMSO-d6) δ 11.59 (s, 1H), 8.86 (d, J=2.4 Hz, 1H), 8.48-8.41 (m, 1H), 8.34 (dd, J=8.6, 2.6 Hz, 1H), 8.20 (s, 1H), 8.15 (d, J=8.6 Hz, 1H), 3.89 (s, 3H) ppm.

Workup

  1. customThe layers were separated
  2. dry with materialthe organic layer was dried over sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure
  5. customto give a tan solid
  6. customThe product was purified on column chromatography
  7. washeluting with 10-100% ethyl acetate in hexanes

Sources & evidence

ORD record
ord-225e157855474d2fa3d480db7f3e5c73
Source dataset
uspto-grants-2015_08
Patent number
US09108903B2

Reaction notes

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