Piperazine → HCID 21081913, compound

HRID 970508Notes

Reaction equation

HRID 970508 reaction equation
[CH2:1]([N:8]1[C:17]2[C:12](=[CH:13][C:14]([F:18])=[CH:15][CH:16]=2)[C:11](Cl)=[C:10]([C:20]#[N:21])[C:9]1=[O:22])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[NH:23]1[CH2:28][CH2:27][NH:26][CH2:25][CH2:24]1>ClCCl>[CH2:1]([N:8]1[C:17]2[C:12](=[CH:13][C:14]([F:18])=[CH:15][CH:16]=2)[C:11]([N:23]2[CH2:28][CH2:27][NH:26][CH2:25][CH2:24]2)=[C:10]([C:20]#[N:21])[C:9]1=[O:22])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 4837PiperazineHCID 21081905HCID 21081905, compound

Product 1

HCID 21081913HCID 21081913, compoundYield 96%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

A solution of Compound 45 (1.0 g, 3.2 mmol) in dichloromethane was added slowly to a stirred solution of piperazin (826 mg g, 9.59 mmol) in dichloromethane at room temperature. The solution was stirred overnight at room temperature. The solvent was removed under reduced pressure. The residue was taken in water sonicated briefly and filtered. The solid was dissolved in ethyl acetate and washed by water. The organic layer was dried over Na2SO4 and concentrated to yield 1.1 g (96%) yellow solids. M.P. 162° C. 1H NMR (DMSO-d6): δ 2.70 (s, 1H), 2.94 (m, 4H), 3.53 (m, 4H), 5.47 (s, 2H), 7.19-7.25 (m, 3H), 7.42 (m, 2H), 7.51 (dd, J=4.3, 9.3 Hz, 1H), 7.54 (td, J=2.4, 8.0 Hz, 1H), 7.58 (dd, J=2.9, 8.9 Hz, 1H). EIMS m/z 363 (M+1).

Workup

  1. customThe solvent was removed under reduced pressure
  2. customsonicated briefly
  3. filtrationfiltered
  4. dissolutionThe solid was dissolved in ethyl acetate
  5. washwashed by water
  6. dry with materialThe organic layer was dried over Na2SO4
  7. concentrationconcentrated

Sources & evidence

ORD record
ord-2c709b7a58264c66b4d3f83ad1bfb7e1
Source dataset
uspto-grants-2007_12
Patent number
US07312220B2

Reaction notes

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