5-Bromo-1-indanone → 5-bromo-2,3-dihydro-1H-inden-1-ol

Participants

Reaction Steps

To a solution of 5-bromoindanone (2.2 g, 0.01 mol) in a mixture of methanol (50 mL) and tetrahydrofuran (10 mL) was added sodium borohydride (0.78 g, 0.02 mol) and the reaction mixture was stirred at room temperature overnight. The solution was concentrated and the residue was partitioned between water and ethyl acetate. The organic layer was washed with brine, dried over magnesium sulfate and filtered. The filtrate was concentrated to give 2.15 g of crude material. 1H NMR (300 MHz, CDCl3) 6 ppm 157 (s, 1 H) 1.87-2.02 (m, 1 H) 2.40-2.59 (m, 1 H) 2.73-2.88 (m, 1 H) 2.95-3.11 (m, 1 H) 5.12-5.25 (m, 1 H) 7.29 (s, 1 H) 7.32-7.43 (m, 2 H). MS (ESI), m/z 416.0 (M+205)+.

Provenance & Evidence