反应详情

Methyl 4-[4-(1-hydroxyethyl)-2-methoxy-5-nitrophenoxy]butyrate (5.04 g) from above was stirred with lithium hydroxide monohydrate in methanol using conventional protocols. 4-[4-(1-Hydroxyethyl)-2-methoxy-5-nitrophenoxy]butyric acid was obtained as an amorphous yellow solid (4.0 g, 83%). 1H NMR (CDCl3) δ1.34 (3 H, d, J=11 Hz, MeCOH), 2.03 (2 H, m, CCH2C), 2.38 (2 H, t, J=7.3 Hz, CH2CO), 3.81 (3 H, s, OMe), 3.96 (2 H, t, J=7.4 Hz, CH2O), 4.13 (2 H, brs, OH), 5.38 (1 H, q, J=10.8 Hz, CHOH), 7.19 (1 H, s, aromatic, and 7.43 (1 H, s, aromatic).