Hydrochloric Acid → N-[2-(4-chlorophenoxy)ethyl]-3-(imidazol-1-yl)-N-methylpropylamine

HRID 323952Notes

Reaction equation

[Cl:1][C:2]1[CH:19]=[CH:18][C:5]([O:6][CH2:7][CH2:8][NH:9][CH2:10][CH2:11][CH2:12][N:13]2[CH:17]=[CH:16][N:15]=[CH:14]2)=[CH:4][CH:3]=1.[CH2:20]=O.Cl>C(O)=O>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:6][CH2:7][CH2:8][N:9]([CH2:10][CH2:11][CH2:12][N:13]2[CH:17]=[CH:16][N:15]=[CH:14]2)[CH3:20])=[CH:18][CH:19]=1

Participants

Conditions

Temperature: 95 °C

Procedure

N-[2-(4-Chlorophenoxy)ethyl]-3-(imidazol-1-yl) propylamine (1.50 g) was added dropwise to 98% formic acid (1.0 ml) at 0° C. Formaldehyde (0.96 ml of a 37% aqueous solution) was added and the mixture heated at 95° C. for 6 hours. On cooling, concentrated hydrochloric acid (0.6 ml) was added. The mixture was evaporated to dryness and the residue dissolved in water, basified with 5M sodium hydroxide solution and extracted with ethyl acetate to give N-[2-(4-chlorophenoxy)ethyl]-3-(imidazol-1-yl)-N-methylpropylamine as an oil.

Workup

temperatureOn cooling
customThe mixture was evaporated to dryness
dissolutionthe residue dissolved in water
extractionextracted with ethyl acetate

Sources & evidence

ORD record: ord-32c76d7348854ff2aeed3b206cd60438
Source dataset: uspto-grants-2001_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06215001B1

Reaction notes

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