Hydrochloric Acid → HCID 178489810, compound

HRID 1092124Notes

Reaction equation

HRID 1092124 reaction equation
C[Al](C)C.[CH3:5][O:6][C:7]1[CH:8]=[C:9]([CH2:15][CH2:16][C:17]2[CH:18]=[C:19]([NH2:22])[NH:20][N:21]=2)[CH:10]=[C:11]([O:13][CH3:14])[CH:12]=1.[CH3:23][N:24]1[CH2:29][CH2:28][N:27]([C:30]2[N:35]=[CH:34][C:33]([C:36](OC)=[O:37])=[CH:32][N:31]=2)[CH2:26][C:25]1=[O:40].Cl>C1(C)C=CC=CC=1.CO>[CH3:14][O:13][C:11]1[CH:10]=[C:9]([CH2:15][CH2:16][C:17]2[CH:18]=[C:19]([NH:22][C:36]([C:33]3[CH:32]=[N:31][C:30]([N:27]4[CH2:28][CH2:29][N:24]([CH3:23])[C:25](=[O:40])[CH2:26]4)=[N:35][CH:34]=3)=[O:37])[NH:20][N:21]=2)[CH:8]=[C:7]([O:6][CH3:5])[CH:12]=1

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 16682925TrimethylaluminumHCID 66589656Methyl 2-(4-methyl-3-oxopiperazin-1-yl)pyrimidine-5-carboxylateHCID 178489815HCID 178489815, compound

Product 1

HCID 178489810HCID 178489810, compoundYield 45%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 1140TolueneSolvent

Conditions

Temperature
60 °C

Procedure

Trimethylaluminium (2M in toluene, 1.23 mL, 2.46 mmol) was added dropwise to a stirred suspension of 5-[2-(3,5-dimethoxyphenyl)ethyl]-2H-pyrazol-3-amine (243 mg, 0.98 mmol) and methyl 2-(4-methyl-3-oxopiperazin-1-yl)pyrimidine-5-carboxylate (246 mg, 0.98 mmol) in toluene (5.00 mL) at 25° C. The resulting solution was stirred at 60° C. for 24 h. The reaction mixture was added to methanol (100 mL), then treated with HCl (2N aqueous solution, until pH was 7 or lower). The crude product was purified by ion exchange chromatography, using a SCX column. The desired product was eluted from the column using 7M NH3/MeOH and fractions were evaporated to dryness to afford impure product. The crude product was purified by preparative HPLC, using decreasingly polar mixtures of water (containing 0.1% TFA) and MeCN as eluents. Fractions containing the desired compound were evaporated to dryness to afford the title compound (204 mg, 45%) as a white solid.

Workup

  1. customThe crude product was purified by ion exchange chromatography
  2. washThe desired product was eluted from the column
  3. customwere evaporated to dryness
  4. customto afford impure product
  5. customThe crude product was purified by preparative HPLC
  6. additionFractions containing the desired compound
  7. customwere evaporated to dryness

Sources & evidence

ORD record
ord-05fd8d70ffed4cf78bf5536ba00b0ca1
Source dataset
uspto-grants-2012_03
Patent number
US08129391B2

Reaction notes

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