A Practical Synthesis of a <i>cis</i>-4,5-Bis(4-chlorophenyl)imidazoline Intermediate for Nutlin Analogues
作者:Lianhe Shu、Ping Wang、Wen Liu、Chen Gu
DOI:10.1021/op300254q
日期:2012.11.16
A practical synthesis of cis-4,5-bis(4-chlorophenyl)imidazoline, a key intermediate for Nutlin analogues, is reported. The title compound was prepared in 81–88% yield by boric acid catalyzed direct condensation of meso-bis(4-chlorophenyl)ethane-1,2-diamine with a benzoic acid. The process was successfully scaled up in a pilot plant, resulting in >15 kg of the product.
报道了Nutlin类似物的关键中间体顺式-4,5-双(4-氯苯基)咪唑啉的实用合成。硼酸催化内消旋-双(4-氯苯基)乙烷-1,2-二胺与苯甲酸的直接缩合反应制得标题化合物,产率为81–88%。该工艺已在中试工厂成功扩大规模,产生了超过15千克的产品。