微波辐射金属铝诱发芳香醛的还原偶联反应

Reductive Coupling Reactions of Aromatic Aldehydes by Using Aluminium under Microwave Irradiation

一系列芳香醛在Al-TiCl3-CH2Cl2体系中反应12 h,以20%～70%的产率得1,2-二醇产品,相同体系中微波辐射8 min相应1,2-二醇的产率达65%～94%.微波辐射下合成1,2-二醇的优点是时间短、产率高、操作简单.

The coupling reactions of aromatic aldehydes were carried out in 20%～70% yields using Al-TiCl3-CH2Cl2 system with stirring for 12 h.The reactions in the same system gave 1,2-diols in 65%～94% yields under microwave irradiation for 8 min.The main advantages of the present procedure are a short-period of time,higher yields and operational simplicity under microwave irradiation.