Tetrabutylammonium Fluoride → 4-chloro-N-({4-chloro-3-[(3-chloro-5-ethynylphenyl)oxy]-2-fluorophenyl}methyl)-1-({[2-(trimethylsilyl)ethyl]oxy}methyl)-1H-imidazole-5-carboxamide

Participants

Reaction Steps

To a solution of 4-chloro-N-{[4-chloro-3-({3-chloro-5-[(trimethylsilyl)ethynyl]phenyl}oxy)-2-fluorophenyl]methyl}-1-({[2-(trimethylsilyl)ethyl]oxy}methyl)-1H-imidazole-5-carboxamide (120 mg, 0.187 mmol) in THF (5 ml) was added TBAF (1.0 M solution in THF) (0.281 ml, 0.281 mmol) and the reaction mixture was stirred for 2 hours. The reaction 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-ethynylphenyl)oxy]-2-fluorophenyl}methyl)-1-({[2-(trimethylsilyl)ethyl]oxy}methyl)-1H-imidazole-5-carboxamide (103 mg, 0.181 mmol, 97% yield). LC-MS (ES−) m/z 566 [M−H].

Provenance & Evidence