Ferromagnetic α-Fe2O3 NPs: a potential catalyst in Sonogashira–Hagihara cross coupling and hetero-Diels–Alder reactions

2016 ◽  
Vol 18 (6) ◽  
pp. 1495-1505 ◽  
Author(s):  
Meenal Kataria ◽  
Subhamay Pramanik ◽  
Navleen Kaur ◽  
Manoj Kumar ◽  
Vandana Bhalla
Keyword(s):  
Bond Formation ◽  
Cross Coupling ◽  
Diels Alder ◽  
Recyclable Catalyst ◽  
Coupling Reactions ◽  
Carbon Bond ◽  
Carbon Carbon Bond

Applications of in situ generated ferromagnetic α-Fe2O3 NPs as an efficient and recyclable catalyst for carbon–carbon bond formation via Sonogashira–Hagihara coupling reactions and the synthesis of pyran derivatives by hetero-Diels–Alder reactions have been demonstrated.

scholarly journals Iodination of carbohydrate-derived 1,2-oxazines to enantiopure 5-iodo-3,6-dihydro-2H-1,2-oxazines and subsequent palladium-catalyzed cross-coupling reactions

2016 ◽  
Vol 12 ◽  
pp. 2898-2905 ◽  
Author(s):  
Michal Medvecký ◽  
Igor Linder ◽  
Luise Schefzig ◽  
Hans-Ulrich Reissig ◽  
Reinhold Zimmer
Keyword(s):  
Click Reaction ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
High Efficacy ◽  
Carbon Bond ◽  
Bond Forming ◽  
Cross Coupling Reactions ◽  
Carbon Carbon Bond ◽  
Palladium Catalyzed ◽  
Oxazine Derivatives

Iodination of carbohydrate-derived 3,6-dihydro-2H-1,2-oxazines of type 3 using iodine and pyridine in DMF furnished 5-iodo-substituted 1,2-oxazine derivatives 4 with high efficacy. The alkenyl iodide moiety of 1,2-oxazine derivatives syn-4 and anti-4 was subsequently exploited for the introduction of new functionalities at the C-5 position by applying palladium-catalyzed carbon–carbon bond-forming reactions such as Sonogashira, Heck, or Suzuki coupling reactions as well as a cyanation reaction. These cross-coupling reactions led to a series of 5-alkynyl-, 5-alkenyl-, 5-aryl- and 5-cyano-substituted 1,2-oxazine derivatives being of considerable interest for further synthetic elaborations. This was exemplarily demonstrated by the hydrogenation of syn-21 and anti-24 and by a click reaction of a 5-alkynyl-substituted precursor.

ChemInform Abstract: Carbon-Carbon Bond Formation by Ligand-Free Cross-Coupling Reaction Using Palladium Catalyst Supported on Synthetic Adsorbent.

ChemInform ◽  
2012 ◽  
Vol 43 (33) ◽  
pp. no-no
Author(s):  
Yasunari Monguchi ◽  
Keita Sakai ◽  
Koichi Endo ◽  
Yuki Fujita ◽  
Masaru Niimura ◽  
...  
Keyword(s):  
Palladium Catalyst ◽  
Bond Formation ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Carbon Bond ◽  
Carbon Carbon Bond ◽  
Cross Coupling Reaction ◽  
Ligand Free
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