scholarly journals Efficient access to β-vinylporphyrin derivatives via palladium cross coupling of β-bromoporphyrins with N-tosylhydrazones

2017 ◽  
Vol 13 ◽  
pp. 195-202 ◽  
Author(s):  
Vinicius R Campos ◽  
Ana T P C Gomes ◽  
Anna C Cunha ◽  
Maria da Graça P M S Neves ◽  
Vitor F Ferreira ◽  
...  
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Synthetic Methodology ◽  
New Approach ◽  
First Report ◽  
Cross Coupling Reaction ◽  
Efficient Access ◽  
Palladium Catalyzed

This work describes a new approach to obtain new β-vinylporphyrin derivatives through palladium-catalyzed cross-coupling reaction of 2-bromo-5,10,15,20-tetraphenylporphyrinatozinc(II) with N-tosylhydrazones. This is the first report of the use of such synthetic methodology in porphyrin chemistry allowing the synthesis of new derivatives, containing β-arylvinyl substituents.

A New Approach to Nine-Membered Enediyne Using a Palladium Catalyzed Cross-Coupling Reaction

Synlett ◽  
1997 ◽  
Vol 1997 (4) ◽  
pp. 381-383 ◽  
Author(s):  
Hiroshi Tanaka ◽  
Haruo Yamada ◽  
Akihisa Matsuda ◽  
Takashi Takahashi
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
New Approach ◽  
Cross Coupling Reaction ◽  
Palladium Catalyzed

Palladium-Catalyzed Cross-Coupling of 4-Tosyloxyquinazolines with H-phosphonates and Phosphine Oxides: An Efficient Access to 2-(hetero)aryl-4-phosphorylated Quinazolines

Synthesis ◽  
2021 ◽  
Author(s):  
Yiyuan Peng ◽  
xinglin ye ◽  
Jian Huang ◽  
Zhihong Deng
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Phosphine Oxides ◽  
Cross Coupling Reaction ◽  
Efficient Access ◽  
Palladium Catalyzed ◽  
Green Methodology

A series of 2-(hetero)aryl-4-phosphonylated quinazolines have been successfully synthesized via the palladium-catalyzed C-O/P-H cross-coupling reaction of 4-tosyloxyquinazoline with H-phosphonate and phosphine oxides in moderate to excellent yields. This efficient and green methodology provided alternative straightforward protocol for the introduction of phosphorus groups to quinazoline compounds at C4 position via C-O activation and enriched the quinazoline structure libraries.

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>

scholarly journals Fluorinated Iron(ii) clathrochelate units in metalorganic based copolymers: improved porosity, iodine uptake, and dye adsorption properties

RSC Advances ◽  
2021 ◽  
Vol 11 (25) ◽  
pp. 14986-14995
Author(s):  
Suchetha Shetty ◽  
Noorullah Baig ◽  
Atikur Hassan ◽  
Saleh Al-Mousawi ◽  
Neeladri Das ◽  
...  
Keyword(s):  
Dye Adsorption ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Building Blocks ◽  
Adsorption Properties ◽  
Iodine Uptake ◽  
Cross Coupling Reaction ◽  
Palladium Catalyzed

We report the synthesis of metalorganic copolymers made from the palladium catalyzed Sonogashira cross-coupling reaction between various iron(ii) clathrochelate building blocks with diethynyl–triptycene and fluorene derivatives.

scholarly journals Mechanistic Aspects of the Palladium‐Catalyzed Suzuki‐Miyaura Cross‐Coupling Reaction

2021 ◽  
Author(s):  
Massimo C. D'Alterio ◽  
Èric Casals-Cruañas ◽  
Nikolaos V. Tzouras ◽  
Giovanni Talarico ◽  
Steven P Nolan ◽  
...  
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Cross Coupling Reaction ◽  
Palladium Catalyzed

Regioselective Oxidative Cross-Coupling Reaction: Synthesis of Imidazo[1,2-a]pyridine Fluorophores

Synthesis ◽  
2021 ◽  
Author(s):  
Xianglong Chu ◽  
Yadi Niu ◽  
Chen Ma ◽  
Xiaodong Wang ◽  
Yunliang Lin ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Quantum Yields ◽  
Fluorescence Quantum Yields ◽  
Cross Coupling Reaction ◽  
Color Tunable ◽  
Palladium Catalyzed ◽  
Structure Relationship ◽  
High Fluorescence

AbstractA rapid access to a series of N-heteroarene fluorophores has been developed on the basis of the palladium-catalyzed direct oxidative C–H/C–H coupling of imidazo[1,2-a]pyridines with thiophenes/furans. The photophysical properties–structure relationship was systematically investigated. The resulting N-heteroarene fluorophores present color-tunable emissions (λem: 431–507 nm in CH2Cl2) and high fluorescence quantum yields (up to 91% in CH2Cl2).

ChemInform Abstract: Palladium-Catalyzed Direct Cross-Coupling Reaction Between Indenes and Electron-Deficient Alkenes.

ChemInform ◽  
2010 ◽  
Vol 41 (43) ◽  
pp. no-no
Author(s):  
Yun-He Xu ◽  
Wee-Jian Wang ◽  
Zhen-Kang Wen ◽  
Joshua Jonathan Hartley ◽  
Teck-Peng Loh
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Cross Coupling Reaction ◽  
Direct Cross ◽  
Palladium Catalyzed
Sign in / Sign up

Export Citation Format

Share Document