Trifluoroacetic acid → HCID 22122160, compound

HRID 1417214Notes

Reaction equation

HRID 1417214 reaction equation
[N:1]([CH2:4][CH2:5][N:6]1[CH2:11][CH2:10][N:9](CC2C=CC(OC)=CC=2OC)[C:8](=[O:23])[C:7]1=[O:24])=[N+:2]=[N-:3].FC(F)(F)C(O)=O.C1(OC)C=CC=CC=1>>[N:1]([CH2:4][CH2:5][N:6]1[CH2:11][CH2:10][NH:9][C:8](=[O:23])[C:7]1=[O:24])=[N+:2]=[N-:3]

Participants

4

Reactant 3

HCID 6422Trifluoroacetic acidHCID 7519AnisoleHCID 22122227HCID 22122227, compound

Product 1

HCID 22122160HCID 22122160, compoundYield 89.7%

Procedure

A mixture of 3.65 g of 1-(2-azidoethyl)-4-(2,4-dimethoxybenzyl)-2,3-dioxopiperazine, 14.6 ml of trifluoroacetic acid and 7.3 ml of anisole was refluxed for 2 hours. The solvent was distilled off under reduced pressure and the resulting residue was purified by a silica gel column chromatography (eluent; chloroform: methanol=20:1) to obtain 1.8 g of 1-(2-azidoethyl)-2,3-dioxopiperazine as an oil.

Workup

  1. temperaturewas refluxed for 2 hours
  2. distillationThe solvent was distilled off under reduced pressure
  3. customthe resulting residue was purified by a silica gel column chromatography (eluent; chloroform: methanol=20:1)

Sources & evidence

ORD record
ord-475865cebd024f3daf0478cd7da6ae63
Source dataset
uspto-grants-1999_03
Patent number
US05877174

Reaction notes

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