Divergent total syntheses of five illudalane sesquiterpenes and assignment of the absolute configuration

2019 ◽  
Vol 55 (29) ◽  
pp. 4250-4253 ◽  
Author(s):  
Zhixiong Zeng ◽  
Yifan Zhao ◽  
Yandong Zhang
Keyword(s):  
Transition Metal ◽  
Absolute Configuration ◽  
Total Syntheses ◽  
The Absolute ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

Transition metal catalyzed [2+2+2] cycloaddition and aromatic C–H oxygenation enables concise, divergent total syntheses of five bioactive illudalane sesquiterpenes.

ChemInform Abstract: Directed Metalation Linked to Transition Metal Catalyzed Cascade Reactions: Two Total Syntheses of Plicadin, the Alleged Coumestan from Psoralea plicata.

ChemInform ◽  
2010 ◽  
Vol 30 (33) ◽  
pp. no-no
Author(s):  
Brian A. Chauder ◽  
Alexey V. Kalinin ◽  
Nicholas J. Taylor ◽  
Victor Snieckus
Keyword(s):  
Transition Metal ◽  
Cascade Reactions ◽  
Total Syntheses ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

Efficient synthesis strategies by application of transition metal-catalyzed carbene/nitrene insertions into C–H bonds

2014 ◽  
Vol 31 (4) ◽  
pp. 449-455 ◽  
Author(s):  
Julian Egger ◽  
Erick M. Carreira
Keyword(s):  
Transition Metal ◽  
High Efficiency ◽  
Efficient Synthesis ◽  
Total Syntheses ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

This Highlight article provides an overview of recent total syntheses that are characterized by high efficiency and enabled through a neat application of transition metal-catalyzed insertions of carbenes and nitrenes into C–H bonds.

Chelation-assisted transition metal-catalysed C–H chalcogenylations

2020 ◽  
Vol 7 (8) ◽  
pp. 1022-1060 ◽  
Author(s):  
Wenbo Ma ◽  
Nikolaos Kaplaneris ◽  
Xinyue Fang ◽  
Linghui Gu ◽  
Ruhuai Mei ◽  
...  
Keyword(s):  
Transition Metal ◽  
Recent Advances ◽  
Site Selectivity ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

This review summarizes recent advances in C–S and C–Se formations via transition metal-catalyzed C–H functionalization utilizing directing groups to control the site-selectivity.

Monodentate Trialkylphosphines: Privileged Ligands in Metal-catalyzed Crosscoupling Reactions

2020 ◽  
Vol 24 (3) ◽  
pp. 231-264 ◽  
Author(s):  
Kevin H. Shaughnessy
Keyword(s):  
Transition Metal ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Aryl Bromides ◽  
Wide Range ◽  
Sterically Demanding ◽  
Transition Metal Catalyzed ◽  
Catalyzed Reactions ◽  
Metal Catalyzed

Phosphines are widely used ligands in transition metal-catalyzed reactions. Arylphosphines, such as triphenylphosphine, were among the first phosphines to show broad utility in catalysis. Beginning in the late 1990s, sterically demanding and electronrich trialkylphosphines began to receive attention as supporting ligands. These ligands were found to be particularly effective at promoting oxidative addition in cross-coupling of aryl halides. With electron-rich, sterically demanding ligands, such as tri-tertbutylphosphine, coupling of aryl bromides could be achieved at room temperature. More importantly, the less reactive, but more broadly available, aryl chlorides became accessible substrates. Tri-tert-butylphosphine has become a privileged ligand that has found application in a wide range of late transition-metal catalyzed coupling reactions. This success has led to the use of numerous monodentate trialkylphosphines in cross-coupling reactions. This review will discuss the general properties and features of monodentate trialkylphosphines and their application in cross-coupling reactions of C–X and C–H bonds.

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