通过钯(0)催化的三重多米诺工艺开发了一种高效,高度区域选择性和立体选择性的合成四取代烯烃的方案。它涉及通过双碳钯和通过2-降冰片芳基炔基联芳基/杂芳基与降冰片烯的双碳键合和CH活化形成三个新的CC键。该方法实际上很简单,具有广泛的底物范围,并且可以耐受各种取代基。带有9 H-吡咯并[1,2- a ]吲哚基序的产物显示出令人感兴趣的固态荧光特性,因此形成了一类新的聚集诱导发射(AIE)荧光团。
A highly modular approach to fused 1,2,3-triazoles has been developed featuring a one-pot procedure combining copper(I) catalyzed azide-alkyne cycloaddition and palladium-catalyzed C-H bond functionalization. A class of structurally unique heterocycles was synthesized in good yields.
Palladium-Catalyzed Synthesis of Tetrasubstituted Olefins by Triple Domino Process
作者:Kanagaraj Naveen、Savariyappan Albert Nikson、Paramasivan Thirumalai Perumal
DOI:10.1002/adsc.201700169
日期:2017.7.17
An efficient, highly regio‐ and stereoselective protocol for the synthesis of tetrasubstituted olefins was developed to take place by a palladium(0)‐catalyzed triple domino process. It involves the formation of three new C−C bonds through double carbopalladation and C−H activation across 2‐bromoaryl alkynyl biaryls/heteroaryls with norbornene. This method is practically simple with broad substrate
通过钯(0)催化的三重多米诺工艺开发了一种高效,高度区域选择性和立体选择性的合成四取代烯烃的方案。它涉及通过双碳钯和通过2-降冰片芳基炔基联芳基/杂芳基与降冰片烯的双碳键合和CH活化形成三个新的CC键。该方法实际上很简单,具有广泛的底物范围,并且可以耐受各种取代基。带有9 H-吡咯并[1,2- a ]吲哚基序的产物显示出令人感兴趣的固态荧光特性,因此形成了一类新的聚集诱导发射(AIE)荧光团。
Intramolecular Reactions of Alkynes with Furans and Electron Rich Arenes Catalyzed by PtCl<sub>2</sub>: The Role of Platinum Carbenes as Intermediates
作者:Belén Martín-Matute、Cristina Nevado、Diego J. Cárdenas、Antonio M. Echavarren
DOI:10.1021/ja029125p
日期:2003.5.1
On the basis of DFT calculations, a cyclopropyl platinacarbene complex was found as the key intermediate in the process. The cyclopropane and dihydrofuran rings of this intermediate open to form a carbonyl compound, which reacts with the platinum carbene to form an oxepin, which is in equilibrium with an arene oxide. When the reaction is carried out in the presence of water, dicarbonyl compounds are