C–H amination/cyclocarbonylation of allene carbamates: a versatile platform for the synthesis of α,β-unsaturated γ-lactams
作者:R. David Grigg、Jennifer M. Schomaker、Vitaliy Timokhin
DOI:10.1016/j.tet.2011.03.026
日期:2011.6
the factors that control the chemoselectivity of Rh-catalyzed aminations of allenes to give either bicyclic methylene aziridines or the desired allenic amines 2. Additionally, the conversion of selected allenic amines to α,β-unsaturated γ-lactam scaffolds via a facile Ru3(CO)12 catalyzed cyclocarbonylation is described.
尽管它们可用作构建各种含氮杂环骨架的基石,但尚未很好地探索通过通用结构1的异戊烯直接C–H胺化制备烯丙胺2的方法。在这份报告中,我们描述了我们的初步研究,这些因素控制着Rh丙二烯的Rh催化胺化反应的化学选择性,从而产生双环亚甲基氮丙啶或所需的烯丙胺2。另外,描述了通过容易的Ru 3(CO)12催化的环羰基化将选择的烯丙胺转化为α,β-不饱和的γ-内酰胺支架。