Sodium Carbonate → 3-[3-(2-Fluorophenoxymethyl)pyrrolidino]methyl-2-methoxypyrazine

HRID 890072Notes

Reaction equation

HRID 890072 reaction equation
[CH3:1][O:2][C:3]1[C:4]([CH:9]=O)=[N:5][CH:6]=[CH:7][N:8]=1.[F:11][C:12]1[CH:24]=[CH:23][CH:22]=[CH:21][C:13]=1[O:14][CH2:15][CH:16]1[CH2:20][CH2:19][NH:18][CH2:17]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(=O)([O-])[O-].[Na+].[Na+]>ClCCl.C(O)(=O)C.C(OCC)(=O)C>[F:11][C:12]1[CH:24]=[CH:23][CH:22]=[CH:21][C:13]=1[O:14][CH2:15][CH:16]1[CH2:20][CH2:19][N:18]([CH2:9][C:4]2[C:3]([O:2][CH3:1])=[N:8][CH:7]=[CH:6][N:5]=2)[CH2:17]1

Participants

8

Reactant 4

HCID 10340Sodium CarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 158805973-Methoxypyrazine-2-carbaldehydeHCID 222485793-(2-Fluorophenoxymethyl)pyrrolidine

Product 1

HCID 222479393-[3-(2-Fluorophenoxymethyl)pyrrolidino]methyl-2-methoxypyrazineYield 77%

Reagents, catalysts & solvents 3

HCID 176Acetic AcidSolventHCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

After dissolving 148 mg of 3-methoxypyrazine-2-carboxaldehyde and 200 mg of 3-(2-fluorophenoxymethyl)pyrrolidine in 5 ml of dichloromethane, 0.07 ml of acetic acid and 297 mg of sodium triacetoxyborohydride were added and the mixture was stirred overnight at room temperature. Aqueous sodium carbonate solution was added to the reaction mixture and extraction was performed with ethyl acetate. The organic layer was washed with water and saturated brine in that order and dried over anhydrous magnesium sulfate, and then the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (solvent: n-hexane/ethyl acetate) to obtain the title compound (245 mg, 77% yield).

Workup

  1. additionwere added
  2. washThe organic layer was washed with water and saturated brine in that order
  3. dry with materialdried over anhydrous magnesium sulfate
  4. distillationthe solvent was distilled off under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (solvent: n-hexane/ethyl acetate)

Sources & evidence

ORD record
ord-a4e5a1184fac43fe871325f340e7f710
Source dataset
uspto-grants-2006_02
Patent number
US06995144B2

Reaction notes

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