Palladium(0) Catalyzed Cross Coupling Reactions of Hindered, Double Activated Aryl Halides with Organozinc Reagents - The Effect of Copper(I) Cocatalysis

Synlett ◽  
1996 ◽  
Vol 1996 (05) ◽  
pp. 473-474 ◽  
Author(s):  
Andreas Weichert ◽  
Martina Bauer ◽  
Petra Wirsig
2019 ◽  
Author(s):  
Randolph Escobar ◽  
Jeffrey Johannes

<div>While carbon-heteroatom cross coupling reactions have been extensively studied, many methods are specific and</div><div>limited to a set of substrates or functional groups. Reported here is a method that allows for C-O, C-N and C-S cross coupling reactions under one general methodology. We propose that an energy transfer pathway, in which an iridium photosensitizer produces an excited nickel (II) complex, is responsible for the key reductive elimination step that couples aryl halides to 1° and 2° alcohols, anilines, thiophenols, carbamates and sulfonamides.</div>


2019 ◽  
Vol 131 (6) ◽  
pp. 1813-1816 ◽  
Author(s):  
Giuseppe Dilauro ◽  
Andrea Francesca Quivelli ◽  
Paola Vitale ◽  
Vito Capriati ◽  
Filippo Maria Perna

Synthesis ◽  
2016 ◽  
Vol 48 (19) ◽  
pp. 3317-3330 ◽  
Author(s):  
Cédric Tresse ◽  
Stéphane Schweizer ◽  
Philippe Bisseret ◽  
Jacques Lalevée ◽  
Gwilherm Evano ◽  
...  

Stereoselective hydrometalation reactions of aryl- and alkyl-substituted trifluoromethylated alkynes with triethylsilane, tributylstannane, and triphenylgermane have been investigated. (E)-α-CF3-Vinylsilanes, -stannanes, and -germanes were obtained under palladium-catalyzed conditions whereas the corresponding (Z)-α-CF3-vinylgermanes were obtained under radical conditions. These reactions proceed in good to excellent yields and possess a broad functional group tolerance. Applications of the (Z)- and (E)-α-CF3-vinylgermanes in palladium-catalyzed cross-coupling reactions with aryl halides having diverse electronic requirements were also investigated. The corresponding (Z)- and (E)-α-CF3-styrenes were obtained as single isomers, thus demonstrating the utility of these versatile synthons for the synthesis of stereodefined trifluoromethylated alkenes.


Author(s):  
Yuan Zhu ◽  
Weisai Zu ◽  
Qing Tian ◽  
Zifeng Cao ◽  
Yu Wei ◽  
...  

Herein, an organoboron photocatalyst, aminoquinolate diarylboron (AQDAB), is utilized collaboratively with nickel catalyst in metallaphotoredox catalyzed C(sp2)–P and C(sp2)–S cross-coupling reactions. This strategy effectively couples aryl halides with diarylphosphine oxides...


Sign in / Sign up

Export Citation Format

Share Document