Ammonium Chloride → HCID 86661625, compound

Participants

Reaction Steps

A solution of tert-butyl {5-[(4-methoxybenzyl)oxy]-2-nitrophenyl}methylcarbamate produced in Example (1a) (209 g, 538 mmol), iron powder (150 g, 2.69 mol) and ammonium chloride (15.0 g, 280 mmol) in ethanol (1.2 L) and water (1 L) was stirred with heating under reflux for five hours. After leaving to cool, the reaction mixture was filtered through celite. The filtrate was concentrated to about half volume under reduced pressure, and the concentrated residue was extracted with toluene (1 L) twice. The organic layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure to obtain the title compound (193 g, 99%) as a brown oil.

Provenance & Evidence