Ammonium Chloride → (E)-2-(3-amino-1H-1,2,4-triazol-1-yl)-5-(4,4,4-trifluoro-3-(3,4,5-trichlorophenyl)but-1-enyl)benzonitrile

To a stirred solution of (E)-2-(3-nitro-1H-1,2,4-triazol-1-yl)-5-(4,4,4-trifluoro-3-(3,4,5-trichlorophenyl)but-1-enyl)benzonitrile (0.6 g, 1.2 mmol) in MeOH (10 mL), were added Zn dust (0.39 g, 5.98 mmol) and sat. aq NH4Cl solution (5 mL) and the resultant reaction mixture was stirred at ambient temperature for 2 h. After completion of the reaction (TLC), the reaction mass was concentrated under reduced pressure. The reaction mass was diluted with CH2Cl2, filtered through a celite bed, and the obtained filtrate concentrated under reduced pressure to afford the title compound as a solid (0.5 g, 89%): mp 72-75° C.; 1H NMR (300 MHz, DMSO-d6) δ 8.72 (s, 1H), 8.26 (s, 1H), 8.01 (d, J=8.4 Hz, 1H), 7.91 (s, 2H), 7.77 (d, J=8.4 Hz, 1H), 6.42 (dd, J=15.6, 9.2 Hz, 1H), 6.83 (d, J=15.6 Hz, 1H), 5.87 (s, 2H), 4.89 (m, 1H); ESIMS m/z 469.95 ([M−H]−).

1. customthe resultant reaction mixture
2. customAfter completion of the reaction (TLC)
3. concentrationthe reaction mass was concentrated under reduced pressure
4. additionThe reaction mass was diluted with CH2Cl2
5. filtrationfiltered through a celite bed
6. concentrationthe obtained filtrate concentrated under reduced pressure

ORD-Eintrag

ord-5156f5bdadcb4419a03d114b05e9b0ee

Quelldatensatz

uspto-grants-2015_12

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09211280B2