Polycyclization Enabled by Relay Catalysis: One-Pot Manganese-Catalyzed C−H Allylation and Silver-Catalyzed Povarov Reaction
作者:Shi-Yong Chen、Qingjiang Li、Xu-Ge Liu、Jia-Qiang Wu、Shang-Shi Zhang、Honggen Wang
DOI:10.1002/cssc.201700452
日期:2017.6.9
is described for the one‐pot synthesis of polycyclic products by a formal [3+2] and [4+2] cycloadditionreaction cascade. A manganese(I) complex catalyzed the first example of directed C−H allylation with allenes, setting the stage for an in situ Povarov cyclization catalyzed by silver(I). The reaction proceeds with high bond‐forming efficiency (three C−C bonds), broad substrate scope, high regio‐ and
在这项研究中,描述了一种基于Mn I / Ag I的中继催化过程,用于通过正式的[3 + 2]和[4 + 2]环加成反应级联来单锅合成多环产物。锰(I)配合物催化了与丙二烯直接进行CH烯丙基化的第一个例子,为银(I)催化原位Povarov环化奠定了基础。该反应以高键形成效率(三个C键),广泛的底物范围,高的区域和立体选择性以及100%的原子经济性进行。
Synthesis of 3-methyleneisoindolin-1-ones via palladium-catalyzed C–Cl bond cleavage and cyclocarbonylation of ortho-chloro ketimines
作者:Jia Ju、Chuanmei Qi、Liyao Zheng、Ruimao Hua
DOI:10.1016/j.tetlet.2013.07.017
日期:2013.9
PdCl2(PCY3)(2)-catalyzed cyclocarbonylative coupling of ortho-chloro arylketimines with CO has been investigated to develop an efficient method for the synthesis of isoindolin-1-ones. The developed synthetic method has the advantages of having easily available starting materials, high atom-economy, and high selectively. (C) 2013 Elsevier Ltd. All rights reserved.