反应条件
1.1: sodium hydroxide / water; 2-methyl tetrahydrofuran / 20 °C 1.2: 60 °C 2.1: sodium hydrogensulfite; water; hydrogen bromide; acetic acid / 2 h / Reflux 3.1: sodium carbonate / o-xylene; water / 70 - 80 °C 3.2: Reflux 3.3: 15 - 55 °C View Scheme
