Cerium(IV) ammonium nitrate catalysed facile and efficient synthesis of polyhydroquinoline derivatives through Hantzsch multicomponent condensation

2008 ◽  
Vol 19 (7) ◽  
pp. 775-779 ◽  
Author(s):  
Cherkupally Sanjeeva Reddy ◽  
Mekala Raghu
Synthesis ◽  
2020 ◽  
Vol 52 (22) ◽  
pp. 3461-3465
Author(s):  
Itaru Nakamura ◽  
Keigo Shiga ◽  
Mao Suzuki ◽  
Masahiro Terada

A synthetic protocol to access O-tert-propargylic oximes derived from tertiary propargylic alcohols was established via Nicholas reaction. Thus, BF3·OEt2-mediated reaction between the dicobalt hexacarbonyl complex of tert-propargylic alcohols and p-nitrobenzaldoxime followed by decomplexation with cerium(IV) ammonium nitrate afforded the corresponding O-tert-propargylic oximes in good to high yields. The obtained O-tert-propargylic oximes were effectively converted into heterocycles, such as four-membered cyclic nitrones, oxazepines, and isoxazolines, by using π-Lewis acidic catalysts.


2011 ◽  
Vol 01 (03) ◽  
pp. 92-97 ◽  
Author(s):  
Kamal Usef Sadek ◽  
Abdulaziz Alnajjar ◽  
Ramadan Ahmed Mekheimer ◽  
Nasr Kamel Mohamed ◽  
Haney A. Mohamed

2011 ◽  
Vol 133 (42) ◽  
pp. 16970-16976 ◽  
Author(s):  
Kristen L. Seim ◽  
Allie C. Obermeyer ◽  
Matthew B. Francis

Author(s):  
Evgeni M. Glebov ◽  
Vjacheslav P. Grivin ◽  
Victor F. Plyusnin ◽  
Roman G. Fedunov ◽  
Ivan P. Pozdnyakov ◽  
...  

2005 ◽  
Vol 2005 (11) ◽  
pp. 733-735 ◽  
Author(s):  
Nemai C. Ganguly ◽  
Sanjoy Dutta ◽  
Mrityunjoy Datta ◽  
Prithwiraj De

Predominant ortho-selective mononitration of low-melting and liquid phenols and hydroxycoumarins in moderate to high yields has been accomplished upon grinding with solid cerium (IV) ammonium nitrate (CAN). Microwave-assisted expeditious CAN-mediated nitration of relatively high melting phenols and hydroxycoumarins with high efficiency and selectively under solvent-free conditions has been also developed to address the problems of sluggishness and low yield for these reluctant substrates.


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