2-(4-Phenylpiperazin-1-yl)ethan-1-amine → HCID 12941059, compound

HRID 1446941Notes

Reaction equation

HRID 1446941 reaction equation
[NH2:1][CH2:2][CH2:3][N:4]1[CH2:9][CH2:8][N:7]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[CH2:6][CH2:5]1.[O:16]1[CH2:33][C@@H:17]1[CH2:18][O:19][C:20]1[CH:25]=[CH:24][C:23]([CH2:26][C:27](OCC#N)=[O:28])=[CH:22][CH:21]=1>C1COCC1>[O:16]1[CH2:33][C@@H:17]1[CH2:18][O:19][C:20]1[CH:21]=[CH:22][C:23]([CH2:26][C:27]([NH:1][CH2:2][CH2:3][N:4]2[CH2:9][CH2:8][N:7]([C:10]3[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=3)[CH2:6][CH2:5]2)=[O:28])=[CH:24][CH:25]=1

Participants

4

Reactant 2

HCID 47425032-(4-Phenylpiperazin-1-yl)ethan-1-amineHCID 12941053HCID 12941053, compound

Product 1

HCID 12941059HCID 12941059, compound

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A mixture of 10.7 g (52.1 mmol) 1-(2-aminoethyl)-4-phenylpiperazine and 13.5 g (54.6 mmol) (R)-4-(2,3-epoxypropoxy)phenylacetic acid, cyanomethyl ester in 125 dry THF was stirred at room temperature for 40 hours. The solvent was removed in vacuo and the residue was triturated with ether to give the crude amide as a white solid. The solid was dissolved in 35 ml. CH2Cl2 and placed on a column of 170 g Woelm basic alumina (grade 3) made up in CHCl2. Elution with 1 liter CH2Cl2 furnished essentially pure material. Crystallization from acetone afforded the end product, m.p. 124°-125°. A second crop, m.p. 121°-123° was obtained from the mother liquors.

Workup

  1. customThe solvent was removed in vacuo
  2. customthe residue was triturated with ether

Sources & evidence

ORD record
ord-6e897cafe4c94bbfad914b28639f4e05
Source dataset
uspto-grants-1982_02
Patent number
US04314085

Reaction notes

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