1-(2-Pyrimidinyl)piperazine → HCID 178489387, compound

HRID 2388948Notes

Reaction equation

HRID 2388948 reaction equation
[CH3:1][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]1[C:17]2[C:12](=[N:13][CH:14]=[C:15]([C:18]3[CH:19]=[C:20]([CH:24]=[CH:25][CH:26]=3)[C:21](O)=[O:22])[CH:16]=2)[NH:11][N:10]=1.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.[N:51]1[CH:56]=[CH:55][CH:54]=[N:53][C:52]=1[N:57]1[CH2:62][CH2:61][NH:60][CH2:59][CH2:58]1>CN(C=O)C>[CH3:1][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]1[C:17]2[C:12](=[N:13][CH:14]=[C:15]([C:18]3[CH:19]=[C:20]([C:21]([N:60]4[CH2:61][CH2:62][N:57]([C:52]5[N:51]=[CH:56][CH:55]=[CH:54][N:53]=5)[CH2:58][CH2:59]4)=[O:22])[CH:24]=[CH:25][CH:26]=3)[CH:16]=2)[NH:11][N:10]=1

Participants

5

Reactant 3

HCID 887471-(2-Pyrimidinyl)piperazineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 178489390HCID 178489390, compound

Product 1

HCID 178489387HCID 178489387, compoundYield 29.3%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 3-[3-(2-methoxy-phenyl)-1H-pyrazolo[3,4-b]pyridin-5-yl]-benzoic acid (18 mg, 0.05 mmol) in DMF (1 mL) was added HATU (20 mg, 0.05 mmol) and 1-(2-pyrimidyl)piperazine (11 uL, 0.08 mmol). The reaction solution was stirred for 16 hours at ambient temperature. The crude product was extracted into ethyl acetate and washed with H2O. The organic layer was dried over Na2SO4, filtered, and adsorbed onto silica gel. Purification by flash chromatography with a gradient of ethyl acetate (containing 10% MeOH) and hexanes afforded the title compound as a white powder (7.2 mg, 28% yield). 1H NMR (500 MHz, CD3OD) δ 8.85 (d, J=2 Hz, 1H), 8.42 (d, J=2 Hz, 1H), 8.35 (d, J=4.5 Hz, 2H), 7.83 (d, J=8 Hz, 1H), 7.79 (s, 1H), 7.64 (m, 2H), 7.50 (m, 2H), 7.20 (d, J=8.5 Hz, 1H), 7.11 (t, J=8 Hz, 1H), 6.64 (t, J=4.5 Hz, 1H), 3.96 (br s, 2H), 3.89 (s, 3H), 3.86 (br s, 4H), 3.60 (br s, 2H). MS: m/z 492.1 (M+H+).

Workup

  1. extractionThe crude product was extracted into ethyl acetate
  2. washwashed with H2O
  3. dry with materialThe organic layer was dried over Na2SO4
  4. filtrationfiltered
  5. customPurification by flash chromatography with a gradient of ethyl acetate (containing 10% MeOH) and hexanes

Sources & evidence

ORD record
ord-d99b90eae7834609bf99b36ce1d07c90
Source dataset
uspto-grants-2012_09
Patent number
US08268994B2

Reaction notes

Loading…