3-Fluorobenzyl chloride → 3-[4-(3-Fluoro-benzyl)-piperazin-1-ylmethyl]-pyrimido[5,4-e][1,2,4]triazine-5,7-diamine

HRID 479111Notes

Reaction equation

HRID 479111 reaction equation
OC(C(F)(F)F)=O.[N:8]1([CH2:14][C:15]2[N:16]=[N:17][C:18]3[C:19](=[C:21]([NH2:26])[N:22]=[C:23]([NH2:25])[N:24]=3)[N:20]=2)[CH2:13][CH2:12][NH:11][CH2:10][CH2:9]1.[F:27][C:28]1[CH:29]=[C:30]([CH:33]=[CH:34][CH:35]=1)[CH2:31]Cl.C(=O)([O-])[O-].[K+].[K+].CC#N.O>CN(C=O)C>[F:27][C:28]1[CH:29]=[C:30]([CH:33]=[CH:34][CH:35]=1)[CH2:31][N:11]1[CH2:12][CH2:13][N:8]([CH2:14][C:15]2[N:16]=[N:17][C:18]3[C:19](=[C:21]([NH2:26])[N:22]=[C:23]([NH2:25])[N:24]=3)[N:20]=2)[CH2:9][CH2:10]1

Participants

6

Reactant 4

HCID 99743-Fluorobenzyl chlorideHCID 11430Potassium CarbonateHCID 18373917Acetonitrile--water (1/1)HCID 865890003-Piperazin-1-ylmethyl-pyrimido[5,4-e][1,2,4]triazine-5,7-diamine TFA salt

Product 1

HCID 121095423-[4-(3-Fluoro-benzyl)-piperazin-1-ylmethyl]-pyrimido[5,4-e][1,2,4]triazine-5,7-diamineYield 37.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a stirred solution of 3-Piperazin-1-ylmethyl-pyrimido[5,4-e][1,2,4]triazine-5,7-diamine TFA salt 5 (50 mg; 0.08 mmol; prepared in EXAMPLE 4) in dry DMF (1.0 mL) was added m-fluorobenzyl chloride (0.0143 mL; 0.12 mmol) followed by potassium carbonate (55 mg; 0.40 mmol). The mixture was allowed to stir for 24 h at room temperature then taken up into CH3CN/H2O/0.1% TFA. The mixture was purified by reverse phase HPLC (Rainin C18, 0% CH3CN to 50% CH3CN gradient, CH3CN/H2O, 0.1% TFA) and the bright yellow fractions containing the product were lyophilized after removal of CH3CN in vacuo to give 11 mg of yellow colored 3-[4-(3-Fluoro-benzyl)-piperazin-1-ylmethyl]-pyrimido[5,4-e][1,2,4]triazine-5,7-diamine as the trifluoroacetate salt.

Workup

  1. customThe mixture was purified by reverse phase HPLC (Rainin C18, 0% CH3CN to 50% CH3CN gradient, CH3CN/H2O, 0.1% TFA)
  2. additionthe bright yellow fractions containing the product
  3. customafter removal of CH3CN in vacuo

Sources & evidence

ORD record
ord-f84da11d6b3e4f74bbccf612692df703
Source dataset
uspto-grants-2003_11
Patent number
US06642381B2

Reaction notes

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