3-Chloro-6-methylpyridazine → 2-(6-Methylpyridazin-3-ylamino)dibenzothiophene

HRID 1064013

Reaktionsgleichung

[NH2:1][C:2]1[CH:14]=[CH:13][C:5]2[S:6][C:7]3[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=3[C:4]=2[CH:3]=1.Cl[C:16]1[N:17]=[N:18][C:19]([CH3:22])=[CH:20][CH:21]=1.CC(C)([O-])C.[Na+]>C1(C)C=CC=CC=1.C(Cl)Cl.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[CH3:22][C:19]1[N:18]=[N:17][C:16]([NH:1][C:2]2[CH:14]=[CH:13][C:5]3[S:6][C:7]4[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=4[C:4]=3[CH:3]=2)=[CH:21][CH:20]=1

Komponenten

Reaktionsbedingungen

Temperatur: 80 °C

Versuchsvorschrift

A mixture of 2-aminodibenzothiophene (0.90 g, 4.52 mM), 3-chloro-6-methyl-pyridazine (0.58 g, 4.52 mM), sodium t-butoxide (0.61 g, 6.33 mM), tris(dibenzylidene-acetone)dipalladium(0) (0.083 g, 0.09 mM) and S-2,2′-bis(diphenylphosphino)-1,1′-binapthyl (0.113 g, 0.18 mM) in toluene (23 ml) was heated to 80° C. for 18 hours under an inert atmosphere. On cooling to room temperature the mixture was diluted with DCM, washed with aqueous potassium carbonate, dried over sodium sulphate and concentrated. Chromatography (eluent gradient of DCM to EtOAc then MeOH:EtOAc (1:9)) gave the product as an off white solid (0.456 g). NMR: 9.38 (brs, 1H), 8.81 (brs, 1H), 8.18 (m, 1H), 8.01 (m, 1H), 7.94 (d, 1H), 7.75 (dd, 1H), 7.50 (m, 1H), 7.36 (d, 1H), 7.14 (d, 1H), 2.50 (s, 3H); m/z 292.29.

Aufarbeitung

temperatureOn cooling to room temperature the mixture
washwashed with aqueous potassium carbonate
dry with materialdried over sodium sulphate
concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag: ord-9559bbad7a0d43079c2afd368f2ac88f
Quelldatensatz: uspto-grants-2005_11
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US06967216B2

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