Acetic Anhydride → N-(2,3-Dihydro-1H-inden-2-yl)acetamide

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Reaction Steps

2-Aminoindane (1.07 g, 8.03 mmol) was dissolved in dichloromethane (20 ml), and acetic anhydride (0.76 ml, 8.04 mmol) and triethylamine (1.7 ml) were added under ice-cooling, and the mixture was stirred at room temperature for 50 min. The reaction mixture was diluted with ethyl acetate-hexane=1:1 mixed solvent (80 ml), and the organic layer was washed with diluted hydrochloric acid, saturated aqueous sodium hydrogen carbonate and saturated brine and dried over anhydrous magnesium sulfate. The insoluble material was filtered off, and the solution was concentrated under reduced pressure. The obtained solid was washed with diethyl ether-hexane-1:5 mixed solvent, and dried under reduced pressure to give the title compound (961 mg, yield 68%) as a pale-yellow solid.

Provenance & Evidence