Triethylamine → HCID 86651993, Verbindung

HRID 1615365Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1615365
I[C:2]1[C:10]2[C:5](=[CH:6][C:7]([CH:11]=[O:12])=[CH:8][CH:9]=2)[NH:4]N=1.[CH3:13]CN(CC)CC.[C:20]([C:22]1[CH:30]=[CH:29][C:25]([N:26]([CH3:28])[CH3:27])=[CH:24][CH:23]=1)#[CH:21]>CN(C=O)C.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.[Cu]I>[CH3:27][N:26]([CH3:28])[C:25]1[CH:29]=[CH:30][C:22]([C:20]#[C:21][C:2]2[C:10]3[C:5](=[CH:6][C:7]([CH:11]=[O:12])=[CH:8][CH:9]=3)[NH:4][CH:13]=2)=[CH:23][CH:24]=1

Komponenten

7

Edukt 3

HCID 8471TriethylamineHCID 51918844-Ethynyl-N,N-dimethylanilineHCID 178519327HCID 178519327, Verbindung

Produkt 1

HCID 86651993HCID 86651993, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)KatalysatorHCID 178418476HCID 178418476, VerbindungKatalysatorHCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

To a solution of 3-iodo-1H-indazole-6-carbaldehyde (136 mg, 0.5 mmol), Pd(PPh3)2Cl2 (14 mg, 0.02 mmol) and CuI (7.6 mg, 0.04 mmol) in DMF (3 mL) was added Et3N (5 mL), followed by 4-ethynyl-N,N-dimethylaniline (109 mg, 0.75 mmol). The resulting mixture was heated at 100° C. (oil temp.) for 45 min. After removal of Et3N, the residue was loaded directly onto a silical gel column. Flash chromatography (eluent: hex to hex/ethyl acetate=5:1 to 1:1, to ethyl acetate) gave the crude 3-((4-(dimethylamino)phenyl)ethynyl)-1H-indole-6-carbaldehyde as greenish brown solid, which was redissolved in MeOH (20 mL). 2-Oxindole (53.2 mg, 0.4 mmol) and piperidine (10 drops) were added and the resulting mixture was refluxed (oil temp 75° C.) for 2 h. Additional 2-oxindole (13.3 mg) was added and the mixture was refluxed for another hour. After cooling to rt, the reaction mixture was suction filtered and the filter cake was rinsed with MeOH (10 mL). The filtrate was concentrated to about 0.5 mL and diluted with EtOAc (8 mL). Hexane (15 mL) was added and the resulting precipitate was collected by suction filtration to give the title compound (63 mg, 31% over 2 steps) as a golden solid (E:Z=9:1). 1H NMR (400 MHz, DMSO-d6) δ 13.40 (s, br, 1H), 10.64 (s, 1H), 7.93 (d, J=8.4 Hz, 1H), 7.91 (s, 1H), 7.79 (s, 1H), 7.57 (d, J=7.2 Hz, 1H), 7.53 (d, J=8.8 Hz, 1H), 7.47 (d, J=8.8 Hz, 2H), 7.24 (t, J=7.6 Hz, 1H), 6.89 (d, J=7.6 Hz, 1H), 6.84 (t, J=7.4 Hz, 1H), 6.75 (d, J=8.8 Hz, 2H), 2.97 (s, 6H); MS ESI 405.2 [M+H]+, calcd for [C26H20N4O+H]+ 405.2.

Aufarbeitung

  1. customAfter removal of Et3N

Quellen und Nachweise

ORD-Eintrag
ord-c0854550a7b04e60aa010edf1ea30677
Quelldatensatz
uspto-grants-2014_07
Patentnummer
US08765748B2

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