1-(3-Chlorophenyl)piperazine → 5-[4-(3-Chloro-phenyl)-piperazin-1-ylmethyl]-pyrimidine-2,4-diamine

HRID 2294040Notes

Reaction equation

HRID 2294040 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([N:8]2[CH2:13][CH2:12][NH:11][CH2:10][CH2:9]2)[CH:5]=[CH:6][CH:7]=1.C(N(CC)CC)C.Br.Br.Br[CH2:24][C:25]1[C:26]([NH2:32])=[N:27][C:28]([NH2:31])=[N:29][CH:30]=1>O1CCCC1>[Cl:1][C:2]1[CH:3]=[C:4]([N:8]2[CH2:13][CH2:12][N:11]([CH2:24][C:25]3[C:26]([NH2:32])=[N:27][C:28]([NH2:31])=[N:29][CH:30]=3)[CH2:10][CH2:9]2)[CH:5]=[CH:6][CH:7]=1

Participants

5

Reactant 3

HCID 13551-(3-Chlorophenyl)piperazineHCID 8471TriethylamineHCID 214736085-(Bromomethyl)pyrimidine-2,4-diamine dihydrobromide

Product 1

HCID 214736735-[4-(3-Chloro-phenyl)-piperazin-1-ylmethyl]-pyrimidine-2,4-diamineYield 63%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A solution of 13.5 g (0.050 mol) of 1-(3-chloro-phenyl)-piperazine in 500 ml of tetrahydrofuran was treated with 35 ml (0.25 mol) of triethylamine and 18.2 g (0.050 mol) of 5-bromomethyl-pyrimidine-2,4-diamine dihydrobromide and the mixture was stirred at room temperature under argon for 16 hours. The suspension obtained was suction filtered and the filtrate was completely freed from the solvents. The residue was chromatographed over silica gel with acetonitrile/methanol 1:1 as the eluent and digested in diethyl ether. 10 g (63%) of 5-[4-(3-chloro-phenyl)-piperazin-1-ylmethyl]-pyrimidine-2,4-diamine were obtained as beige crystals; m.p. 222°-226°.

Workup

  1. customThe suspension obtained
  2. filtrationfiltered
  3. customThe residue was chromatographed over silica gel with acetonitrile/methanol 1:1 as the eluent and digested in diethyl ether

Sources & evidence

ORD record
ord-82a69ec5510545d78b21805f22dd62c6
Source dataset
uspto-grants-1997_11
Patent number
US05688798

Reaction notes

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