Titanium‐Catalyzed Intermolecular Hydroaminoalkylation of Allenes and Methylenecyclopropanes
作者:Tobias Kaper、Aylişa Elma、Hermann Thye、Paula Knupe‐Wolfgang、René Zimmering、Marc Schmidtmann、Sven Doye
DOI:10.1002/ejoc.202200991
日期:2022.12.6
products exhibiting a structurally interesting cis-orientation of all three cyclopropane hydrogen atoms and a 2-aminoethyl side chain are regio- and stereoselectively accessible by titanium-catalyzed hydroaminoalkylation reactions of bicyclic methylenecyclopropanes. In addition, synthetically promising allylamines can be obtained from 1,1- and 1,3-disubstituted allenes under comparable reaction conditions
1,2,3-三取代的环丙烷产品展示了所有三个环丙烷氢原子和 2-氨基乙基侧链的结构有趣的顺式取向,可通过双环亚甲基环丙烷的钛催化加氢氨基烷基化反应进行区域选择性和立体选择性地获得。此外,在类似的反应条件下,可以从 1,1- 和 1,3- 二取代的丙二烯中获得具有合成前景的烯丙胺。