Palladium-Catalyzed Cascade Difluoroalkylation and Phosphinoylation of 2-Vinyloxy Arylalkynes: Selective Synthesis of Difluoroalkyl-Containing Tetrasubstituted Alkenylphosphine Oxides

Author(s):  
Pengbo Zhang ◽  
Guo Yu ◽  
Ning Zhao ◽  
Shanshan Zhang ◽  
Minghui Zhang ◽  
...  
2020 ◽  
Vol 59 (46) ◽  
pp. 20394-20398
Author(s):  
Ji Yang ◽  
Jiawang Liu ◽  
Yao Ge ◽  
Weiheng Huang ◽  
Helfried Neumann ◽  
...  

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1813
Author(s):  
László Kollár ◽  
Ádám Erdélyi ◽  
Haroon Rasheed ◽  
Attila Takács

The aminocarbonylation of various alkenyl and (hetero)aryl iodides was carried out using tropane-based amines of biological importance, such as 8-azabicyclo[3.2.1]octan-3-one (nortropinone) and 3α-hydroxy-8-azabicyclo[3.2.1]octane (nortropine) as N-nucleophile. Using iodoalkenes, the two nucleophiles were selectively converted to the corresponding amide in the presence of Pd(OAc)2/2 PPh3 catalysts. In the presence of several iodo(hetero)arenes, the application of the bidentate Xantphos was necessary to produce the target compounds selectively. The new carboxamides of varied structure, formed in palladium-catalyzed aminocarbonylation reactions, were isolated and fully characterized. In this way, a novel synthetic method has been developed for the producing of N-acylnortropane derivatives of biological importance.


2010 ◽  
Vol 75 (10) ◽  
pp. 3484-3487 ◽  
Author(s):  
Shao-Feng Pi ◽  
Xu-Heng Yang ◽  
Xiao-Cheng Huang ◽  
Yun Liang ◽  
Guan-Nan Yang ◽  
...  

Author(s):  
Xin-Xing Wu ◽  
Hao Ye ◽  
Ming Li ◽  
Jianing Qian ◽  
Hong Dai ◽  
...  

A formal [6 + 1] annulation reaction provides an efficient route enabling rapid access to diverse caprolactams by the double C–C bond formation of the same site from methyl ketones.


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