Microwave irradiation of a mixture of aromatic aldehydes and hexamethyldisilazane in the presence of a solid catalyst such as alumina afforded methanediamines which were efficiently converted to either cis- or trans-2,4,5-triarylimidazolines depending on the base used. A one-pot selective synthesis of cis- and transimidazolines from aromatic aldehydes was achieved under microwave irradiation.
在固体催化剂(如氧化铝)存在下对芳香醛和
六甲基二硅氮烷的混合物进行微波照射,得到甲二胺,根据所使用的碱,该甲二胺可有效转化为顺式或反式 2,4,5-三芳基
咪唑啉。在微波辐射下实现了从芳香醛中一锅选择性合成顺式和反式
咪唑啉。