Réaction #2487441

Équation de réaction

((6-(2-(2,4-difluorophenyl)-1,1-difluoro-2-hydroxy-3-(1H-tetrazol-1-yl)propyl)pyridin-3-yl)oxy)nicotinaldehyde

EtOH

O-Methylhydroxylamine hydrochloride

N2

→

title compound

(E)-6-((6-(2-(2,4-difluorophenyl)-1,1-difluoro-2-hydroxy-3-(1H-tetrazol-1-yl)propyl)pyridin-3-yl)oxy)nicotinaldehyde O-methyl oxime

Conditions de réaction

Traitement

1. 1
   AutreThe reaction mixture was evaporated
2. 2
   Autrethe crude residue was purified on silica (ISCO, 12 gram column, gradient to 75% EtOAc/Hexanes over 25 minutes)

Mode opératoire

To a magnetically stirred mixture of 6-(((6-(2-(2,4-difluorophenyl)-1,1-difluoro-2-hydroxy-3-(1H-tetrazol-1-yl)propyl)pyridin-3-yl)oxy)nicotinaldehyde (101) (60 mg, 0.126 mmol) in dry EtOH (1.265 mL) was added O-Methylhydroxylamine hydrochloride (21.13 mg, 0.253 mmol) in a 5 mL vial under N2 atmosphere. The reaction mixture was stirred at RT overnight. The reaction mixture was evaporated and the crude residue was purified on silica (ISCO, 12 gram column, gradient to 75% EtOAc/Hexanes over 25 minutes) to afford the title compound. Yield=18 mg (26.9%) of a white foam. 1H NMR (400 MHz, CDCl3) δ 8.76 (s, 1H), 8.47 (d, J=2.5 Hz, 1H), 8.19 (d, J=2.3 Hz, 1H), 8.11 (dd, J=8.7, 2.4 Hz, 1H), 8.04 (s, 1H), 7.67 (dd, J=8.7, 2.6 Hz, 1H), 7.63 (d, J=8.8 Hz, 1H), 7.45 (s, 1H), 7.36 (td, J=8.8, 6.4 Hz, 1H), 7.05 (d, J=8.5 Hz, 1H), 6.83-6.73 (m, 1H), 6.73-6.64 (m, 1H), 5.63 (d, J=14.3 Hz, 1H), 5.10 (d, J=14.3 Hz, 1H), 3.99 (s, 3H). 1H-decoupled 19F NMR (376 MHz, CDCl3) δ −103.20 (d, J=17.7 Hz), −103.89 (ddd, J=31.3, 21.1, 13.6 Hz), −108.11 (d, J=9.5 Hz), −110.21 (d, J=45.0 Hz), −110.90 (d, J=45.0 Hz). MS(ESI): m/z 504.2 (M+H)+.

Source