Palladium-Catalyzed Cross-Coupling Reaction of Bis(pinacolato)diboron with 1-Alkenyl Halides or Triflates:  Convenient Synthesis of Unsymmetrical 1,3-Dienes via the Borylation-Coupling Sequence

2002 ◽  
Vol 124 (27) ◽  
pp. 8001-8006 ◽  
Author(s):  
Jun Takagi ◽  
Kou Takahashi ◽  
Tatsuo Ishiyama ◽  
Norio Miyaura
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Cross Coupling Reaction ◽  
Convenient Synthesis ◽  
Palladium Catalyzed ◽  
Coupling Sequence

Indium-mediated difunctionalization of iodoalkyl-tethered unactivated alkenes via an intramolecular cyclization and an ensuing palladium-catalyzed cross-coupling reaction with aryl halides

2020 ◽  
Vol 7 (18) ◽  
pp. 2703-2709
Author(s):  
Xuan-Di Song ◽  
Xiang-Rui Li ◽  
Ya-Wen Wang ◽  
Xue-Qiang Chu ◽  
Weidong Rao ◽  
...  
Keyword(s):  
Intramolecular Cyclization ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Aryl Halides ◽  
Cross Coupling Reaction ◽  
Palladium Catalyzed ◽  
Cyclic Compounds ◽  
Coupling Sequence

A cobalt-catalyzed, indium-mediated difunctionalization of iodoalkyl-tethered unactivated alkenes for accessing five-membered cyclic compounds via a cyclization/cross-coupling sequence was developed.

Ferromagnetic Chain Based on Verdazyl-Nitroxide Diradical

2020 ◽  
Author(s):  
Evgeny Tretyakov ◽  
Svetlana Zhivetyeva ◽  
Pavel Petunin ◽  
Dmitry Gorbunov ◽  
Nina Gritsan ◽  
...  
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Ferromagnetic Coupling ◽  
Nitronyl Nitroxide ◽  
Triplet Ground State ◽  
One Dimensional ◽  
Cross Coupling Reaction ◽  
Palladium Catalyzed ◽  
Ferromagnetic Chain ◽  
High Yields

<p>Verdazyl-nitroxide diradicals were synthesized using the palladium-catalyzed cross-coupling reaction of the corresponding iodoverdazyls with a nitronyl nitroxide-2-ide gold(I) complex with high yields (up to 82%). The synthesized diradicals were found to be highly thermally stable and have a singlet (D<i>E</i><sub>ST</sub> » -64 cm<sup>–1</sup>) or triplet ground state (D<i>E</i><sub>ST</sub> ³ 25 and 100 cm<sup>–1</sup>), depending on which canonical hydrocarbon diradical type they belong to. Upon crystallization, triplet diradicals form unique one-dimensional (1D) spin <i>S</i> = 1 chains of organic diradicals with intrachain ferromagnetic coupling of <i>J</i>′/<i>k</i><sub>B</sub> from 3 to 6 K.</p>

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