Dimethyl Sulfoxide → 3-Methyl-11-(4-methyl-piperazin-1-yl)-3-methyl-5H-dibenzo[b,e][1,4]diazepine

HRID 1350509Notes

Reaction equation

Cl.[CH3:2][C:3]1[CH:4]=[CH:5][C:6]2[C:12]([NH2:13])=[N:11][C:10]3[CH:14]=[CH:15][CH:16]=[CH:17][C:9]=3[NH:8][C:7]=2[CH:18]=1.[CH3:19][N:20]1[CH2:25][CH2:24]N[CH2:22][CH2:21]1.[CH:26](N(CC)C(C)C)(C)C.CS(C)=O>Cl.C(OCC)(=O)C.C1(C)C=CC=CC=1>[CH3:2][C:3]1([CH3:26])[CH:18]=[C:7]2[NH:8][C:9]3[CH:17]=[CH:16][CH:15]=[CH:14][C:10]=3[N:11]=[C:12]([N:13]3[CH2:24][CH2:25][N:20]([CH3:19])[CH2:21][CH2:22]3)[C:6]2=[CH:5][CH2:4]1

Participants

Conditions

Temperature: 110 °C

Procedure

Combine 3-methyl-5H-dibenzo[b,e][1,4]diazepin-11-ylamine hydrochloride (636.4 mg, 2.85 mmol), N-methylpiperazine (444.2 mg, 3.08 mmol), N,N-diisopropylethylamine (856.5 mg, 8.55 mmol), DMSO (2.0 ml), and toluene (4.0 ml). Stir and heat the mixture at 110° C. After 48 hours, add one drop of 5N HCl. After 72 hours, cool the mixture to ambient temperature and then dilute it with ethyl acetate. Wash the organic layer with DI H2O and brine. Dry (sodium sulfate) and concentrate the organic layer to residue. Purify the residue on silica gel using dichloromethane/methanol (90:10) to give 362.9 mg (42%) of a tan foam: mp 84°, dec; mass spectrum (ion spray): m/z=307.1 (M+1).

Workup

waitAfter 72 hours
temperaturecool the mixture to ambient temperature
washWash the organic layer with DI H2O and brine
dry with materialDry (sodium sulfate)
concentrationconcentrate the organic layer to residue
customPurify the residue on silica gel

Sources & evidence

ORD record: ord-21e08f58f120417ab45618e4052d5917
Source dataset: uspto-grants-2007_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07214673B2

Reaction notes

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