multiple stereocenters from the same set of starting materials. We report herein the first diastereodivergent [3+2] annulation of aromatic aldimines with alkenes via C-H activation by half-sandwich rare-earth catalysts. This protocol provides an efficient and general route for the selective synthesis of both trans and cis diastereoisomers of multi-substituted 1-aminoindanes from the same set of aldimines
Luminescent Organogold(III) Complexes with Long-Lived Triplet Excited States for Light-Induced Oxidative CH Bond Functionalization and Hydrogen Production
作者:Wai-Pong To、Glenna So-Ming Tong、Wei Lu、Chensheng Ma、Jia Liu、Andy Lok-Fung Chow、Chi-Ming Che
DOI:10.1002/anie.201108080
日期:2012.3.12
that glitters is gold: Highly phosphorescent gold(III) complexes (see picture) with extended π‐conjugated cyclometalating ligands exhibit rich photophysical and photochemical properties. They act as efficient photocatalysts/photosensitizers for oxidativefunctionalizations of secondary and tertiary benzylic amines and homogeneous hydrogenproduction from a water/acetonitrile mixture.
Structure–Reactivity Relationship in the Frustrated Lewis Pair (FLP)‐Catalyzed Hydrogenation of Imines
作者:Sebastian Tussing、Karl Kaupmees、Jan Paradies
DOI:10.1002/chem.201600716
日期:2016.5.23
The autoinduced, frustratedLewispair (FLP)‐catalyzed hydrogenation of 16‐benzene‐ring substituted N‐benzylidene‐tert‐butylamines with B(2,6‐F2C6H3)3 and molecular hydrogen was investigated by kinetic analysis. The pKa values for imines and for the corresponding amines were determined by quantum‐mechanical methods and provided a direct proportional relationship. The correlation of the two rate constants
的autoinduced,沮丧路易斯对(FLP)16 -苯环的催化的加氢取代Ñ -benzylidene-叔-butylamines与B(2,6-F 2 C ^ 6 ħ 3)3和分子氢是由动力学分析调查。亚胺和相应胺的p K a值是通过量子力学方法确定的,并提供了直接的比例关系。两个速率常数k 1(简单的催化循环)和k 2(自动诱导的催化循环)与p K的相关性亚胺和胺对之间的差异(ΔpK a)或Hammett的σ参数用作建立FLP催化的亚胺加氢反应的结构反应性关系的有用参数。
Carbonylation Access to Phthalimides Using Self-Sufficient Directing Group and Nucleophile
Herein we report a novel palladium-catalyzedoxidativecarbonylation reaction for the synthesis of phthalimides with high atom- and step-economy. In our strategy, the imine and H2O, which are generated in situ from the condensation of aldehyde and amine, serve as self-sufficient directing group and nucleophile, respectively. This method provides rapid access to phthalimides starting from readily available
important chemical transformation for oxidation of amines to imines, on account of very important versatile applications of imines in organic synthesis. Here, we develop a convenient way to synthesize carbon doped WO3−x ultrathin nanosheets via an acid-assisted one-pot process. The carbon doped WO3−x ultrathin nanosheets exhibit excellent photocatalytic activity in the aerobic oxidation of amines to corresponding