scholarly journals Synthesis of Cross-Conjugated Polyenes via Palladium-Catalyzed Oxidative C–C Bond Forming Cascade Reactions of Allenes

2020 ◽  
Vol 85 (8) ◽  
pp. 5428-5437
Author(s):  
Veluru Ramesh Naidu ◽  
Jan-E. Bäckvall
ChemInform ◽  
2012 ◽  
Vol 43 (27) ◽  
pp. no-no
Author(s):  
Satoshi Ueda ◽  
Siraj Ali ◽  
Brett P. Fors ◽  
Stephen L. Buchwald

2016 ◽  
Vol 12 ◽  
pp. 2898-2905 ◽  
Author(s):  
Michal Medvecký ◽  
Igor Linder ◽  
Luise Schefzig ◽  
Hans-Ulrich Reissig ◽  
Reinhold Zimmer

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.


ACS Catalysis ◽  
2013 ◽  
Vol 4 (1) ◽  
pp. 49-52 ◽  
Author(s):  
Zheng-Yang Gu ◽  
Tong-Hao Zhu ◽  
Jia-Jia Cao ◽  
Xiao-Ping Xu ◽  
Shun-Yi Wang ◽  
...  

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