Hydrochloric Acid → 2-[5-(6-Chloroquinoxalin-2-yloxy)-2-ethylphenyl]hexahydro-4,7-ethanoindene-1,3-dione

HRID 339467

Reaction equation

[CH2:1]([C:3]1[CH:8]=[CH:7][C:6]([OH:9])=[CH:5][C:4]=1[CH:10]1[C:18](=[O:19])[CH:17]2[CH:12]([CH:13]3[CH2:21][CH2:20][CH:16]2[CH2:15][CH2:14]3)[C:11]1=[O:22])[CH3:2].C(=O)([O-])[O-].[K+].[K+].Cl[C:30]1[CH:39]=[N:38][C:37]2[C:32](=[CH:33][CH:34]=[C:35]([Cl:40])[CH:36]=2)[N:31]=1.Cl>CN(C)C=O.ClCCl>[Cl:40][C:35]1[CH:36]=[C:37]2[C:32](=[CH:33][CH:34]=1)[N:31]=[C:30]([O:9][C:6]1[CH:7]=[CH:8][C:3]([CH2:1][CH3:2])=[C:4]([CH:10]3[C:18](=[O:19])[CH:17]4[CH:12]([CH:13]5[CH2:21][CH2:20][CH:16]4[CH2:15][CH2:14]5)[C:11]3=[O:22])[CH:5]=1)[CH:39]=[N:38]2

Participants

Conditions

Temperature: 140 °C

Procedure

To a mixture of 2-(2-ethyl-5-hydroxyphenyl)hexahydro-4,7-ethanoindene-1,3-dione (83 mg, 0.28 mmol) and anhydrous potassium carbonate (90 mg, 0.56 mmol) is added a solution of 2,6-dichloroquinoxaline (67 mg, 0.34 mmol) in anhydrous dimethylformamide (2.0 ml), and the mixture is heated at 140° C. for 40 minutes under microwave irradiation. The mixture is acidified with 2M aqueous hydrochloric acid and diluted with dichloromethane then filtered. The organic phase is concentrated under reduced pressure and the residue is purified by preparative reverse phase HPLC to afford 2-[5-(6-chloroquinoxalin-2-yloxy)-2-ethylphenyl]hexahydro-4,7-ethanoindene-1,3-dione.

Workup

filtrationthen filtered
concentrationThe organic phase is concentrated under reduced pressure
customthe residue is purified by preparative reverse phase HPLC

Sources & evidence

ORD record: ord-b30b327cf88748a5a0b2a419f8867806
Source dataset: uspto-grants-2014_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08895474B2

Linked notes

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