Pyridine → HCID 22050691, compound

HRID 1831958Notes

Reaction equation

HRID 1831958 reaction equation
[NH2:1][CH2:2][C:3]1[CH:4]=[C:5]([CH:26]=[CH:27][CH:28]=1)[CH2:6][N:7]1[C:12]([CH3:13])=[CH:11][C:10]([O:14][CH2:15][C:16]2[CH:21]=[CH:20][C:19]([F:22])=[CH:18][C:17]=2[F:23])=[C:9]([Br:24])[C:8]1=[O:25].N1C=CC=CC=1.Cl[C:36]([O:38][C:39]1[CH:44]=[CH:43][C:42]([N+:45]([O-:47])=[O:46])=[CH:41][CH:40]=1)=[O:37]>ClCCl>[Br:24][C:9]1[C:8](=[O:25])[N:7]([CH2:6][C:5]2[CH:4]=[C:3]([CH:28]=[CH:27][CH:26]=2)[CH2:2][NH:1][C:36](=[O:37])[O:38][C:39]2[CH:40]=[CH:41][C:42]([N+:45]([O-:47])=[O:46])=[CH:43][CH:44]=2)[C:12]([CH3:13])=[CH:11][C:10]=1[O:14][CH2:15][C:16]1[CH:21]=[CH:20][C:19]([F:22])=[CH:18][C:17]=1[F:23]

Participants

5

Reactant 3

HCID 1049PyridineHCID 821294-Nitrophenyl chloroformate2×HCID 11155124HCID 11155124, compound

Product 1

HCID 22050691HCID 22050691, compoundYield 66%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent3×

Procedure

1-[3-(aminomethyl)benzyl]-3-bromo-4-[(2,4-difluorobenzyl)oxy]-6-methylpyridin-2(1H)-one (EXAMPLE 161) (2.00 g, 4.45 mmol) was suspended in dichloromethane (15 mL). Pyridine was added (0.43 mL, 5.34 mmol). After stirring for 10 minutes at room temperature, a stock solution of 4-nitrophenyl chloroformate (10.0 mL, 0.50 M) in dichloromethane was added dropwise. After stirring for 4.5 hours at room temperature, a stock solution of 4-nitrophenyl chloroformate (2.5 mL, 0.50 M) in dichloromethane was again added dropwise and stirring continued at 40° C. overnight. The reaction mixture was concentrated and subjected to chromatography (silica gel, ethyl acetate with 10% methanol/hexanes) to afford a yellow solid (1.11 g, 66%). 1H NMR (400 MHz, DMSO-d6) δ 8.56 (app t, J=6.10 Hz, 1H), 8.24-8.21 (m, 2H), 7.62 (app q, J=7.88 Hz, 1H), 7.40-7.27 (m, 7H), 6.98 (d, J=7.52 Hz, 1H), 6.54 (s, 1H), 5.30 (s, 2H), 5.24 (s, 2H), 4.25 (d, J=6.18 Hz, 2H), 2.30 (s, 3H). ES-HRMS m/z 614.0753 (M+H C28H22BrF2N3O6 requires 614.0733).

Workup

  1. stirringAfter stirring for 4.5 hours at room temperature
  2. stirringstirring
  3. waitcontinued at 40° C. overnight
  4. concentrationThe reaction mixture was concentrated

Sources & evidence

ORD record
ord-e8d7d399fb45468b91ff2820e3efb83b
Source dataset
uspto-grants-2006_06
Patent number
US07067540B2

Reaction notes

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