Tributylvinyltin → 2-(6-chloro-3-vinylpyridazin-4-yl)-4-fluoro-1H-indole

HRID 595709Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 595709
Cl[C:2]1[N:3]=[N:4][C:5]([Cl:18])=[CH:6][C:7]=1[C:8]1[NH:9][C:10]2[C:15]([CH:16]=1)=[C:14]([F:17])[CH:13]=[CH:12][CH:11]=2.[CH2:19]([Sn](CCCC)(CCCC)C=C)[CH2:20]CC.[Li+].[Cl-]>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>[Cl:18][C:5]1[N:4]=[N:3][C:2]([CH:19]=[CH2:20])=[C:7]([C:8]2[NH:9][C:10]3[C:15]([CH:16]=2)=[C:14]([F:17])[CH:13]=[CH:12][CH:11]=3)[CH:6]=1

Komponenten

6

Edukt 3

HCID 81998TributylvinyltinHCID 433294Lithium ChlorideHCID 903336002-(3,6-dichloropyridazin-4-yl)-4-fluoro-1H-indole

Produkt 1

HCID 903335012-(6-chloro-3-vinylpyridazin-4-yl)-4-fluoro-1H-indoleAusbeute 30,1 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418476HCID 178418476, VerbindungKatalysatorHCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

To a degassed solution of 2-(3,6-dichloropyridazin-4-yl)-4-fluoro-1H-indole (500 mg, 1.7 mmol), tributyl(vinyl)stannane (560 mg, 1.7 mmol) and LiCl (375 mg, 8.9 mmol) in DMF (5 mL) was added Pd(PPh3)2Cl2 (30 mg) under N2, and the mixture was stirred at 80° C. for 12 h. After the solvent was removed, the residue was purified by prep-TLC (PE:EtOAc=2:1) to give the product of 2-(6-chloro-3-vinylpyridazin-4-yl)-4-fluoro-1H-indole (140 mg, yield: 29%). 1H-NMR (CDCl3, 400 MHz) δ 8.71 (s, 1H), 7.61 (s, 1H), 7.16 (dd, J=10.8, 16.8 Hz, 2H), 7.03 (s, 1H), 6.87 (d, J=6.8 Hz, 2H), 6.68 (s, 1H), 5.79 (s, 1H). MS (M+H)+: 274/276.

Aufarbeitung

  1. customAfter the solvent was removed
  2. customthe residue was purified by prep-TLC (PE:EtOAc=2:1)

Quellen und Nachweise

ORD-Eintrag
ord-58f237958662498393f24fb2e0c14e1c
Quelldatensatz
uspto-grants-2016_01
Patentnummer
US09243002B2

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