ChemInform Abstract: The Palladium-Catalyzed Cross-Coupling Reaction of Enol Acetates of . alpha.-Bromo Ketones with 1-Alkenyl-, Aryl-, or Alkylboron Compounds. A Facile Synthesis of Ketones and Their Enol Acetates.

ChemInform ◽  
2010 ◽  
Vol 24 (4) ◽  
pp. no-no
Author(s):  
S. ABE ◽  
N. MIYAURA ◽  
A. SUZUKI
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Facile Synthesis ◽  
Cross Coupling Reaction ◽  
Palladium Catalyzed ◽  
Enol Acetates

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>

Sign in / Sign up

Export Citation Format

Share Document