1-Methylpiperazine → HCID 22418791, compound

HRID 892983Notes

Reaction equation

HRID 892983 reaction equation
[CH2:1]([N:3]([CH2:17][CH3:18])[C:4]1[N:9]=[C:8]([N:10]2[CH2:15][CH2:14][NH:13][CH2:12][CH2:11]2)[CH:7]=[C:6](Cl)[N:5]=1)[CH3:2].[CH3:19][N:20]1[CH2:25][CH2:24][NH:23][CH2:22][CH2:21]1>O>[CH2:1]([N:3]([CH2:17][CH3:18])[C:4]1[N:9]=[C:8]([N:10]2[CH2:15][CH2:14][NH:13][CH2:12][CH2:11]2)[CH:7]=[C:6]([N:23]2[CH2:24][CH2:25][N:20]([CH3:19])[CH2:21][CH2:22]2)[N:5]=1)[CH3:2]

Participants

4

Reactant 2

HCID 531671-MethylpiperazineHCID 22418728HCID 22418728, compound

Product 1

HCID 22418791HCID 22418791, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

2-Diethylamino-4,6-dichloropyrimidine (10 g) is reacted with piperazine (14.45 g) in ethanol (200 ml) at reflux for 2 hr. The mixture is concentrated and the product isolated by silica gel chromatography giving 2-diethylamino-4-piperazino-6-chloropyrimidine. The 2-diethylamino-4-piperazino-6-chloropyrimidine (8 g) and N-methylpiperazine (8 g) is heated neat at 70° for 16 hr. Then water (2.5 ml) is added and the mixture is heated at 100° for 50 hr. The mixture is chromatographed on silica gel, the appropriate fractions are pooled and concentrated to give the title compound, NMR (CDCl3) 1.15, 2.80, 2.85, 2.90, 3.30, 3.70 and 4.95 δ.

Workup

  1. temperaturethe mixture is heated at 100° for 50 hr
  2. customThe mixture is chromatographed on silica gel
  3. concentrationconcentrated

Sources & evidence

ORD record
ord-bc18af7d5548463e88f9523d1fbe0a11
Source dataset
uspto-grants-1992_06
Patent number
US05120843

Reaction notes

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