Diisobutylaluminum hydride → 4-chloro-N-({4-chloro-3-[(3-chloro-5-methylphenyl)oxy]-2-fluorophenyl}methyl)-1-({[2-(trimethylsilyl)ethyl]oxy}methyl)-1H-imidazole-5-carboxamide

Participants

Reaction Conditions

Reaction Steps

To a solution of N-({3-[(3-bromo-5-chlorophenyl)oxy]-4-chloro-2-fluorophenyl}methyl)-4-chloro-1-({[2-(trimethylsilyl)ethyl]oxy}methyl)-1H-imidazole-5-carboxamide (112 mg, 0.180 mmol) and 1,1′-bis(diphenylphosphino)ferrocenedichloropalladium(II) dichloromethane complex (7.33 mg, 8.98 μmol) in THF (5 ml) at 0° C. was added DIBAL-H (1.0 M solution in dichloromethane) (0.018 ml, 0.018 mmol), followed by dimethylzinc (1.0 M solution in heptane) (0.197 ml, 0.197 mmol), and the reaction mixture was stirred with heating at 60° C. for one hour. The mixture was diluted with EtOAc and washed with water. The solvent was removed and the crude material was purified via silica gel chromatography to give 4-chloro-N-({4-chloro-3-[(3-chloro-5-methylphenyl)oxy]-2-fluorophenyl}methyl)-1-({[2-(trimethylsilyl)ethyl]oxy}methyl)-1H-imidazole-5-carboxamide (75 mg, 0.134 mmol, 75% yield). 1H NMR (400 MHz, DMSO-d5) δ ppm 8.72-8.86 (m, 1H), 7.98 (s, 1H), 7.45 (dd, J=8.6, 1.4 Hz, 1H), 7.30-7.40 (m, 1H), 7.01 (s, 1H), 6.71 (d, 2H), 5.49 (s, 2H), 4.47 (d, 2H), 3.38 (t, 2 H), 2.25 (s, 3H), 0.75 (t, 2H), −0.09 (s, 9H

Provenance & Evidence