Phosphorus oxychloride → HCID 22503630, compound

HRID 1251208Notes

Reaction equation

[CH2:1]([O:8][CH2:9][CH2:10][O:11][C:12]1[CH:17]=[CH:16][C:15]([C:18]2[NH:19][C:20](=O)[C:21]3[C:26]([CH:27]=2)=[CH:25][CH:24]=[CH:23][CH:22]=3)=[CH:14][C:13]=1[O:29][CH3:30])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.P(Cl)(Cl)([Cl:33])=O>>[CH2:1]([O:8][CH2:9][CH2:10][O:11][C:12]1[CH:17]=[CH:16][C:15]([C:18]2[N:19]([Cl:33])[CH2:20][C:21]3[C:26]([CH:27]=2)=[CH:25][CH:24]=[CH:23][CH:22]=3)=[CH:14][C:13]=1[O:29][CH3:30])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

Reactant 2

HCID 24813Phosphorus oxychloride

HCID 22503407HCID 22503407, compound

Product 1

HCID 22503630HCID 22503630, compound

Procedure

The resulting 3-[4-(2-benzyloxyethoxy)-3-methoxyphenyl]isoquinolin-1-one (3.15 g) was reacted with phosphorus oxychloride (20 ml) according to the method of Example 10-2, to give 3-[4-(2-benzyloxyethoxy)-3-methoxyphenyl)-2-chloroisoquinoline. Then, N-ethylpiperazine (30 ml) and potassium carbonate (1.83 g) were added to the resulting compound as it was. The resulting mixture was reacted at 90° C. overnight. The reaction solution was evaporated, and to the resulting residue were added ethyl acetate and purified water. The ethyl acetate layer was washed with water and brine, and dried over magnesium sulfate. The solvent was evaporated, to give 3-[4-(2-benzyloxyethoxy)-3-methoxyphenyl]-1-(4-ethylpiperazin-1-yl)isoquinoline.

Sources & evidence

ORD record: ord-8f1177fa67104a0a84f3a87a419872f1
Source dataset: uspto-grants-2002_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06340759B1

Reaction notes

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