Water → 1-(5-bromomethyl-pyrazin-2-yl)-5-chloro-1H-pyridin-2-one

HRID 1585908Notes

Reaction equation

HRID 1585908 reaction equation
C1C(=O)N([Br:8])C(=O)C1.CSC.[Cl:12][C:13]1[CH:14]=[CH:15][C:16](=[O:27])[N:17]([C:19]2[CH:24]=[N:23][C:22]([CH2:25]O)=[CH:21][N:20]=2)[CH:18]=1.O>C(Cl)Cl>[Br:8][CH2:25][C:22]1[N:23]=[CH:24][C:19]([N:17]2[CH:18]=[C:13]([Cl:12])[CH:14]=[CH:15][C:16]2=[O:27])=[N:20][CH:21]=1

Participants

6

Reactant 4

HCID 962WaterHCID 1068Dimethyl SulfideHCID 67184N-bromobutanimideHCID 187797445-chloro-1-(5-hydroxymethyl-pyrazin-2-yl)-1H-pyridin-2-one

Product 1

HCID 187796991-(5-bromomethyl-pyrazin-2-yl)-5-chloro-1H-pyridin-2-one

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Conditions

Temperature
-20 °C

Procedure

To a slurry of NBS (0.598 g, 3.36 mmol) in CH2Cl2 (10 ml)at 0° C. was added methylsulfide (0.296 ml, 4.035 mmol). The slurry was cooled to -20° C. and the alcohol from step 3 (0.532 g, 2.24 mmol) was added followed by CH2Cl2 (10 ml). The reaction was stirred at 0° C. for 3 hrs and then at room temperature for 24 hrs. The reaction was poured into water and extracted into CH2Cl2 and the combined extracts were dried (MgSO4) and evaporated in vacuo. The residue was chromatographed (silica gel, EtOAc: CH2Cl2 30:70) to afford the title compound.

Workup

  1. waitat room temperature for 24 hrs
  2. extractionextracted into CH2Cl2
  3. dry with materialthe combined extracts were dried (MgSO4)
  4. customevaporated in vacuo
  5. customThe residue was chromatographed (silica gel, EtOAc: CH2Cl2 30:70)

Sources & evidence

ORD record
ord-13b8f6859fe44b758367023ed56fc2b0
Source dataset
uspto-grants-1999_08
Patent number
US05939439

Reaction notes

Loading…