Hydrochloric Acid → 2-Hydroxy-5-nitrobenzyl alcohol

関与物質

反応条件

反応手順

A solution of 2-hydroxy-5-nitrobenzaldehyde (5.01 g, 30 mmol) in a mixture of 60 mL 1M NaOH and 30 mL MeOH was cooled to 0° C. NaBH4 (1.13 g, 30 mmol) solution in 15 ml 1M NaOH and 5 mL MeOH was added slowly. The reaction mixture was stirred for 24 hours at room temperature. The mixture was poured into ice cooled 2M HCl and extracted with EtOAc. The organic layer was washed, dried, and evaporated in vacuo to give the alcohol as a yellow solid (5.1 g, 100%): MP 112-114° C.; 1H NMR (DMSO-d6, 400 MHz) δ 11.08 (s, 1H), 8.18 (d, 1H, J=2.5 Hz), 8.00 (dd, 1H, J=2.5 and 8.7 Hz), 6.92 (d, 1H, J=8.8 Hz), 5.20 (br, 1H), 4.49 (s, 2H).

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