One-Pot Synthesis of 2-Arylbenzoxazoles by Gas-Free Carbonylation using Dicobalt Octacarbonyl as a Solid Carbon Monoxide Source

2015 ◽  
Vol 4 (4) ◽  
pp. 354-358 ◽  
Author(s):  
Poongavanam Baburajan ◽  
Kuppanagounder P. Elango
2017 ◽  
Vol 4 (3) ◽  
pp. 392-397 ◽  
Author(s):  
Wun-Huei Lin ◽  
Wen-Chun Wu ◽  
Manikandan Selvaraju ◽  
Chung-Ming Sun

A direct and unconventional method for the synthesis of benzazoles and quinazolinones is discovered by using iron pentacarbonyl as a reducing agent and a solid carbon monoxide source under microwave irradiation.


2019 ◽  
Vol 2019 (38) ◽  
pp. 6557-6560 ◽  
Author(s):  
Karim Muratov ◽  
Oleg I. Afanasyev ◽  
Ekaterina Kuchuk ◽  
Sofiya Runikhina ◽  
Denis Chusov

2002 ◽  
Vol 74 (1) ◽  
pp. 85-91 ◽  
Author(s):  
Nakcheol Jeong ◽  
Byung Ki Sung ◽  
Jin Sung Kim ◽  
Soon Bong Park ◽  
Sung Deok Seo ◽  
...  

Cocyclization of alkynes, alkenes, and carbon monoxide by transition metals (known as Pauson­Khand reaction when dicobalt octacarbonyl complexes are used) has been accepted as one of the most powerful tools in the synthesis of cyclopentenones. Despite significant progress in the various aspects of the reaction, we still needed new catalysts to expand the scope of the reaction further. We found rhodium (I) catalysts, e.g., RhCl(PPh3)3, trans-RhCl(CO)(PPh3)2, RhCl-(CO)(dppe), and trans-[RhCl(CO)(dppp)]2, were also effective for this transformation. The scope and the efficiencies of the reaction could be tuned and expanded by the choice of catalysts. For example, we were able to devise an enantioselective PK-type reaction and a tandem strategy employing two catalysts in one pot. These results will be presented.


ChemInform ◽  
2013 ◽  
Vol 44 (5) ◽  
pp. no-no
Author(s):  
Yang Shen ◽  
Chao Han ◽  
Shuying Cai ◽  
Ping Lu ◽  
Yanguang Wang

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