Sulfonic acid-functionalized magnetic nanoparticles as a recyclable and eco-friendly catalyst for atom economical Michael addition reactions and bis indolyl methane synthesis

RSC Advances ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 3023-3030 ◽  
Author(s):  
Hajar Mahmoudi ◽  
Abbas Ali Jafari ◽  
Soroosh Saeedi ◽  
Habib Firouzabadi

Sulfonic acid-functionalized magnetic nanoparticles as a recyclable and eco-friendly catalyst for atom economical Michael addition reaction and bis indolyl methane synthesis.

RSC Advances ◽  
2015 ◽  
Vol 5 (100) ◽  
pp. 81768-81773 ◽  
Author(s):  
Sakkani Nagaraju ◽  
Neeli Satyanarayana ◽  
Banoth Paplal ◽  
Anuji K. Vasu ◽  
Sriram Kanvah ◽  
...  

Various isoxazole–oxindole hybrids were synthesized via vinylogous Henry reaction of 3,5-dimethyl-4-nitroisoxazole and isatin under catalyst free conditions in water. The products obtained were functionalized using 1,6-Michael addition reaction.


2017 ◽  
Vol 15 (29) ◽  
pp. 6089-6092 ◽  
Author(s):  
Feng Yin ◽  
Ainash Garifullina ◽  
Fujie Tanaka

An enantioselective Michael addition reaction system was developed. Using the reaction system, 5-methylpyrrolidine-3-carboxylic acid was synthesized in two steps.


2018 ◽  
Vol 54 (38) ◽  
pp. 4814-4817 ◽  
Author(s):  
Imtiyaz Ahmad Bhat ◽  
Anthonisamy Devaraj ◽  
Prodip Howlader ◽  
Ki-Whan Chi ◽  
Partha Sarathi Mukherjee

A chiral M12L4 molecular tetrahedron (T) was synthesized by self-assembly of chiral cis-[(1S,2S)-dch]Pt(NO3)2 (M) with a hexadentate ligand (L) in 3 : 1 stoichiometric ratio. The cage T was found to catalyze the Michael addition reactions of series of nitrostyrene derivatives with indole in (9 : 1) water–methanol mixture.


2020 ◽  
Vol 22 (20) ◽  
pp. 11529-11536 ◽  
Author(s):  
Josefredo R. Pliego

Amino-thiourea organocatalysis is an important catalytic process for enantioselective conjugate addition reactions.


2020 ◽  
Vol 49 (35) ◽  
pp. 12365-12371
Author(s):  
Xiu-Fang Mo ◽  
Chang-Feng Xiong ◽  
Ze-Wen Chen ◽  
Chao Liu ◽  
Piao He ◽  
...  

Zinc complexes supported by pyridine-N-oxide ligands show highly efficient catalysis for Michael addition reaction. The NMR and MS experiments analysis displays intermediate [Zn(SR)2(HSR)4] has real catalytic activity for the addition reactions.


RSC Advances ◽  
2017 ◽  
Vol 7 (39) ◽  
pp. 24547-24550 ◽  
Author(s):  
Xiaolei Du ◽  
Dawei Yin ◽  
Zemei Ge ◽  
Xin Wang ◽  
Runtao Li

The asymmetric Michael addition reaction of pyrrolones with chalcones catalyzed by vicinal primary-diamine salts has been developed in good yields and high enantioselectivities.


2015 ◽  
Vol 13 (39) ◽  
pp. 9943-9947 ◽  
Author(s):  
Zhi-Pei Zhang ◽  
Nan Dong ◽  
Xin Li ◽  
Jin-Pei Cheng

A highly enantioselective Michael addition reaction of 2-substituted benzofuran-3(2H)-ones to nitroolefins was promoted by a bifunctional squaramide catalyst.


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