Trimethylaluminum → HCID 178489768, compound

HRID 1911435Notes

Reaction equation

HRID 1911435 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-fff3124b5495418fb2c456f23df0614c
Source dataset
uspto-grants-2013_12
Patent number
US08604022B2

Reaction notes

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