The Baylis-Hillman condensation of three types of α,β-conjugate cycloketones with aldehydes was successfully performed by using diethylaluminum iodide as the Lewis acid promoter alone without the direct use of a Lewis base. The reaction proceeded to completion at 0 °C in CH2Cl2 within 24 h to give modest to good yields (53â72%).
成功地使用
二乙基铝
碘作为单一的Lewis酸
促进剂,无需直接使用Lewis碱,实现了三种类型的α,β-共轭环酮与醛的Baylis-Hillman缩合反应。该反应在0°C下于
CH2Cl2中在24小时内完成,产率适中至良好(53-72%)。