1-Methylpiperazine → HCID 90402487, compound

HRID 2200647Notes

Reaction equation

HRID 2200647 reaction equation
[Cl:1][C:2]1[CH:36]=[CH:35][C:5]([CH2:6][N:7]2[C:15]3[C:14](=[O:16])[N:13]([CH2:17][C:18]([OH:20])=O)[C:12](=[O:21])[N:11]([CH3:22])[C:10]=3[N:9]=[C:8]2[O:23][C:24]2[CH:29]=[CH:28][CH:27]=[C:26]([O:30][C:31]([F:34])([F:33])[F:32])[CH:25]=2)=[CH:4][CH:3]=1.[CH3:37][N:38]1[CH2:43][CH2:42][NH:41][CH2:40][CH2:39]1.F[P-](F)(F)(F)(F)F.N1(OC(N(C)C)=[N+](C)C)C2N=CC=CC=2N=N1>CN1C(=O)CCC1.C(OCC)(=O)C.O>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([CH2:6][N:7]2[C:15]3[C:14](=[O:16])[N:13]([CH2:17][C:18]([N:41]4[CH2:42][CH2:43][N:38]([CH3:37])[CH2:39][CH2:40]4)=[O:20])[C:12](=[O:21])[N:11]([CH3:22])[C:10]=3[N:9]=[C:8]2[O:23][C:24]2[CH:29]=[CH:28][CH:27]=[C:26]([O:30][C:31]([F:33])([F:34])[F:32])[CH:25]=2)=[CH:35][CH:36]=1

Participants

7

Reactant 3

HCID 531671-MethylpiperazineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 90402760HCID 90402760, compound

Product 1

HCID 90402487HCID 90402487, compoundYield 27.5%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 8857Ethyl AcetateSolventHCID 13387N-methyl-2-pyrrolidoneSolvent

Conditions

Temperature
60 °C

Procedure

To a solution of 2-(7-(4-chlorobenzyl)-3-methyl-2,6-dioxo-8-(3-(trifluoromethoxy)phenoxy)-2,3,6,7-tetrahydro-1H-purin-1-yl)acetic acid (80 mg, 0.152 mmol, example 9) in NMP (2 mL) was added TEA (0.1 mL, 0.614 mmol), 1-methylpiperazine (0.07 mL, 0.614 mmol) and O-(7-aza-1H-benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (87 mg, 0.231 mmol); then the mixture was stirred at 60° C. for 16 h. Then the mixture was diluted with ethyl acetate and water, the phases were separated. The organic phase was washed with brine, dried over sodium sulfate, filtered and concentrated to give crude product. This crude material was purified by recrystallization from methanol to give 7-(4-chlorobenzyl)-3-methyl-1-(2-(4-methylpiperazin-1-yl)-2-oxoethyl)-8-(3-(trifluoromethoxy)phenoxy)-1H-purine-2,6(3H,7H)-dione (25 mg, 27.5% yield) as white solid. 1H-NMR (DMSO-d6) δ 7.62-7.59(t, 1H), 7.55(s, 1H), 7.49-7.39(m, 5H), 7.36-7.34(d, 1H), 5.43(s, 2H), 4.71(s, 2H), 3.55-3.48(m, 4H), 3.30(s, 3H), 2.46-2.36(m, 4H), 2.21(s, 3H). LCMS retention time 2.298 min; LCMS MH+ 607.

Workup

  1. customthe phases were separated
  2. washThe organic phase was washed with brine
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customto give crude product
  7. customThis crude material was purified by recrystallization from methanol

Sources & evidence

ORD record
ord-0faf701d2e2b4604b7615793fac8879d
Source dataset
uspto-grants-2016_06
Patent number
US09359359B2

Reaction notes

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