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

HRID 222710

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-99a5e3ebac8b402aa997363db905c9ac
Source dataset: uspto-grants-2012_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08207331B2

Linked notes

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