Trimethylaluminum → HCID 178489768, compound

HRID 16862Notes

Reaction equation

HRID 16862 reaction equation
[CH3:1][C@H:2]1[NH:7][C@@H:6]([CH3:8])[CH2:5][N:4]([C:9]2[CH:19]=[CH:18][C:12]([C:13]([O:15]CC)=O)=[CH:11][CH:10]=2)[CH2:3]1.[CH3:20][O:21][C:22]1[CH:23]=[C:24]([CH2:30][CH2:31][C:32]2[CH:33]=[C:34]([NH2:37])[NH:35][N:36]=2)[CH:25]=[C:26]([O:28][CH3:29])[CH:27]=1.C[Al](C)C>ClCCl>[CH3:29][O:28][C:26]1[CH:25]=[C:24]([CH2:30][CH2:31][C:32]2[CH:33]=[C:34]([NH:37][C:13](=[O:15])[C:12]3[CH:11]=[CH:10][C:9]([N:4]4[CH2:5][C@H:6]([CH3:8])[NH:7][C@H:2]([CH3:1])[CH2:3]4)=[CH:19][CH:18]=3)[NH:35][N:36]=2)[CH:23]=[C:22]([O:21][CH3:20])[CH:27]=1

Participants

5

Reactant 3

HCID 16682925TrimethylaluminumHCID 23381002Ethyl 4-((3S,5R)-3,5-dimethylpiperazin-1-yl)benzoateHCID 178489815HCID 178489815, compound

Product 1

HCID 178489768HCID 178489768, compoundYield 50.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

N-[5-[2-(3,5-dimethoxyphenyl)ethyl]-2H-pyrazol-3-yl]-4-[(3R,5S)-3,5-dimethylpiperazin-1-yl]benzamide was prepared following the procedure as for Example 155, but starting with ethyl 4-((3R,5S)-3,5-dimethylpiperazin-1-yl)benzoate (0.525 g, 2 mmol), 5-[2-(3,5-dimethoxyphenyl)ethyl]-2H-pyrazol-3-amine (0.495 g, 2.00 mmol) and 2M trimethylaluminium (2.5 ml, 5.0 mmol in toluene). The crude mixture was chromatographed on a SCX column, eluting with 7N ammonia in methanol. Fractions containing product were combined and evaporated to give an oil. The oil was suspended in dichloromethane (20 ml) and product slowly crystallised out. This was filtered to give the title compound (0.465 g, 50.2%).

Workup

  1. customN-[5-[2-(3,5-dimethoxyphenyl)ethyl]-2H-pyrazol-3-yl]-4-[(3R,5S)-3,5-dimethylpiperazin-1-yl]benzamide was prepared
  2. customThe crude mixture was chromatographed on a SCX column
  3. washeluting with 7N ammonia in methanol
  4. additionFractions containing product
  5. customevaporated
  6. customto give an oil
  7. customproduct slowly crystallised out
  8. filtrationThis was filtered

Sources & evidence

ORD record
ord-7d576a6e47b1488a877f19176448944d
Source dataset
uspto-grants-2010_06
Patent number
US07737149B2

Reaction notes

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