University of Washington

The resultant mixture was extracted between chloroform and saturated sodium bicarbonate solution. The organic layer was dried using anhydrous sodium sulfate and concentrated under reduced pressure. The resultant residue was dissolved in acetone (60 mL) and added slowly to a cooled mixture of 4-nitrophenol (16.1 g, 116 mmol) in acetone (130 mL ... ................
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