作者:Masatoshi Matsumoto、Masashi Harada、Yasuhiro Yamashita、Shū Kobayashi
DOI:10.1039/c4cc06156j
日期:——
We report here efficient catalytic imineâimine cross-coupling reactions based on an umpolung strategy; an imine bearing a 9-fluorenyl moiety on its nitrogen atom, which acted as a nucleophile, reacted with another imine to afford an imineâimine cross-coupling adduct in high yield. Furthermore, a chiral guanidine acted as a chiral catalyst for these coupling reactions, and optically active 1,2-diamines were obtained in high yields with high enantioselectivities.
我们在此报告了基于umpolung 策略的高效催化亚胺-亚胺交叉偶联反应;一个氮原子上带有 9-芴基的亚胺作为亲核体,与另一个亚胺反应,以高产率得到亚胺-亚胺交叉偶联加合物。此外,手性胍还可作为这些偶联反应的手性催化剂,并以高产率和高对映选择性获得光学活性 1,2 二胺。