反应条件
1: sodium hydrogencarbonate / water; 2-methyl tetrahydrofuran; toluene / 2 h / 13 - 18 °C 2: lithium tert-butylate / N,N-dimethyl-formamide; tetrahydrofuran / 44 h / 20 °C / |Cooling with ice 3: N-methyl-acetamide; N-bromosuccinmide / chloroform / 18 h / 30 °C / |Reflux View Scheme
