Potassium Carbonate → 3-Cyclobutyl-7-[(5-nitro-2-thienyl)oxy]-2,3,4,5-tetrahydro-1H-3-benzazepine

HRID 645845Notes

Reaction equation

Br[C:2]1[S:3][C:4]([N+:7]([O-:9])=[O:8])=[CH:5][CH:6]=1.[CH:10]1([N:14]2[CH2:20][CH2:19][C:18]3[CH:21]=[C:22]([OH:25])[CH:23]=[CH:24][C:17]=3[CH2:16][CH2:15]2)[CH2:13][CH2:12][CH2:11]1.C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O.C(OCC)(=O)C>[CH:10]1([N:14]2[CH2:15][CH2:16][C:17]3[CH:24]=[CH:23][C:22]([O:25][C:2]4[S:3][C:4]([N+:7]([O-:9])=[O:8])=[CH:5][CH:6]=4)=[CH:21][C:18]=3[CH2:19][CH2:20]2)[CH2:13][CH2:12][CH2:11]1

Participants

Conditions

Temperature: 80 °C

Procedure

A mixture of 2-bromo-5-nitrothiophene (478 mg, 2.3 mmol), 3-cyclobutyl-2,3,4,5-tetrahydro-1H-benzo[d]azepin-7-ol (E3) (500 mg, 2.3 mmol) and potassium carbonate (765 mg, 5.5 mmol) in dimethylformamide (10 ml) was stirred at 80° C. for 16 hours. The reaction mixture was cooled, diluted with ethyl acetate and washed with water, brine and dried (sodium sulfate). Concentration in vacuo and purification of the resulting residue by column chromatography 0.880 ammonia:methanol:dichloromethane (1:8:300) afforded the title compound (E211); MS (ES+) m/e 345 [M+H]+.

Workup

temperatureThe reaction mixture was cooled
washwashed with water, brine
dry with materialdried (sodium sulfate)
concentrationConcentration
customin vacuo and purification of the resulting residue by column chromatography 0.880 ammonia:methanol:dichloromethane (1:8:300)

Sources & evidence

ORD record: ord-e82a233984ce47ac9103e8e0ee2f2b64
Source dataset: uspto-grants-2010_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07704994B2

Reaction notes

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