Dimethylformamide → 5-(3-(6-chloropyrazin-2-yl)-1-tosyl-1H-indol-5-yl)-N-(4-methoxybenzyl)-1,3,4-oxadiazol-2-amine

HRID 634098Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 634098
[Cl:1][C:2]1[CH:7]=[N:6][CH:5]=[C:4]([Sn](CCCC)(CCCC)CCCC)[N:3]=1.I[C:22]1[C:30]2[C:25](=[CH:26][CH:27]=[C:28]([C:31]3[O:35][C:34]([NH:36][CH2:37][C:38]4[CH:43]=[CH:42][C:41]([O:44][CH3:45])=[CH:40][CH:39]=4)=[N:33][N:32]=3)[CH:29]=2)[N:24]([S:46]([C:49]2[CH:55]=[CH:54][C:52]([CH3:53])=[CH:51][CH:50]=2)(=[O:48])=[O:47])[CH:23]=1.CN(C=O)C>C(Cl)Cl.[Cu]I.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:1][C:2]1[N:3]=[C:4]([C:22]2[C:30]3[C:25](=[CH:26][CH:27]=[C:28]([C:31]4[O:35][C:34]([NH:36][CH2:37][C:38]5[CH:39]=[CH:40][C:41]([O:44][CH3:45])=[CH:42][CH:43]=5)=[N:33][N:32]=4)[CH:29]=3)[N:24]([S:46]([C:49]3[CH:50]=[CH:51][C:52]([CH3:53])=[CH:54][CH:55]=3)(=[O:48])=[O:47])[CH:23]=2)[CH:5]=[N:6][CH:7]=1

Komponenten

7

Edukt 3

HCID 6228DimethylformamideHCID 117740572-Chloro-6-(tributylstannyl)pyrazineHCID 683283255-(3-iodo-1-tosyl-1H-indol-5-yl)-N-(4-methoxybenzyl)-1,3,4-oxadiazol-2-amine

Produkt 1

HCID 867250915-(3-(6-chloropyrazin-2-yl)-1-tosyl-1H-indol-5-yl)-N-(4-methoxybenzyl)-1,3,4-oxadiazol-2-amineAusbeute 49,1 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)KatalysatorHCID 178418397HCID 178418397, VerbindungKatalysatorHCID 6344DichloromethaneLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

In a 20 mL glass microwave tube, 2-chloro-6-(tributylstannyl)pyrazine (0.807 g, 1.999 mmol), 5-(3-iodo-1-tosyl-1H-indol-5-yl)-N-(4-methoxybenzyl)-1,3,4-oxadiazol-2-amine (1.00 g, 1.665 mmol), CuI (0.381 g, 1.999 mmol), Pd(PPh3)4 (0.096 g, 0.083 mmol) was purged with argon and treated with DMF (15 mL). The tube was heated in an Initiator microwave reactor (Personal Chemistry, Biotage AB, Inc., Uppsala, Sweden) at 100° C. for 1 h. The crude mixture was then diluted with DCM and washed with water. The organic layer was dried, filtered and concentrated and the residue was purified with flash chromatography to give 5-(3-(6-chloropyrazin-2-yl)-1-tosyl-1H-indol-5-yl)-N-(4-methoxybenzyl)-1,3,4-oxadiazol-2-amine (0.48 g, 0.818 mmol, 49%) as a light yellow amorphous solid. MS (ESI, pos. ion) m/z: 586.9 (M+1). 1H NMR (400 MHz, DMSO-d6) δ ppm 9.44 (1H, s), 9.02 (1H, s), 8.85 (1H, s), 8.71 (1H, s), 8.28-8.36 (1H, m), 8.18 (1H, d, J=8.8 Hz), 8.03 (1H, m, J=8.4 Hz), 7.95 (1H, s), 7.88-7.95 (1H, m), 7.45 (1H, m, J=8.2 Hz), 7.33 (2H, m, J=8.6 Hz), 6.90 (2H, m, J=8.6 Hz), 4.37 (2H, d, J=6.1 Hz), 3.72 (3H, s), 2.33 (3H, s).

Aufarbeitung

  1. washwashed with water
  2. customThe organic layer was dried
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customthe residue was purified with flash chromatography

Quellen und Nachweise

ORD-Eintrag
ord-bd4327163f0848d29b01cf8b5ec01f9f
Quelldatensatz
uspto-grants-2016_04
Patentnummer
US09321756B2

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