反应详情

To a solution of 4-(1-hydroxy-2-methyl-propyl)-benzoic acid methyl ester (5000 mg, 24.04 mmol) in toluene (240 mL) is added 1,1′-(azodicarbonyl)dipiperidine (ADDP, 9098 mg, 36.06 mmol) at 0° C., followed by the additions of tributylphosphine (8.98 mL, 36.06 mmol) and 4-bromo-3,5-dimethyl-phenol (5798 mg, 28.85 mmol). The reaction mixture is warmed up to room temperature and stirred overnight. The mixture is loaded on silica gel, eluted with hexanes with a gradient from 0% of ethyl acetate to 50% of ethyl acetate giving the titled compound (5540 mg).

1. washeluted with hexanes with a gradient from 0% of ethyl acetate to 50% of ethyl acetate giving the titled compound (5540 mg)