Water → HCID 136340259, compound

Participants

Reaction Steps

To a solution of 5-(5-chloro-2-(4-methoxybenzyloxy)phenyl)-4-nitro-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole (prepared according to the procedure described for Example 14) (1.193 g, 2.434 mmol) in 17 mL dichloromethane was added 3 mL water followed by dichlorodicyanoquinone (1.2208 g). The reaction was stirred at room temperature for 48 hours, and then additional Dichlorodicyanoquinone (0.4946 g) was added. After an additional 24 hours, the reaction was poured into saturated aqueous sodium bicarbonate and extracted with dichloromethane. The organic portion was dried over magnesium sulfate and evaporated in vacuo. The crude product was purified via flash chromatography on silica gel (0 to 35% ethyl acetate in heptanes) to yield 745.2 mg (83%) of 4-chloro-2-(4-nitro-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazol-5-yl)phenol. LCMS (ESI) m+H=270.2; 1H NMR (400 MHz, DMSO-d6) δ: 10.47 (s, 1H), 8.44 (s, 1H), 7.47 (d, J=2.6, 1H), 7.43 (dd, J=8.8, 2.7, 1H), 7.00 (d, J=8.8, 1H), 5.30 (dd, J=65.1, 10.8, 2H), 3.42 (t, J=8.1, 2H), 0.74 (t, 2H), −0.08 (s, 9H).

Provenance & Evidence