Enzymatic thiol Michael addition using laccases: Multiple CS bond formation between p-hydroquinones and aromatic thiols

2016 ◽  
Vol 126 ◽  
pp. 106-114 ◽  
Author(s):  
Max Schlippert ◽  
Annett Mikolasch ◽  
Veronika Hahn ◽  
Frieder Schauer
2006 ◽  
Vol 25 (24) ◽  
pp. 5757-5767 ◽  
Author(s):  
Corina Scriban ◽  
David S. Glueck ◽  
Lev N. Zakharov ◽  
W. Scott Kassel ◽  
Antonio G. DiPasquale ◽  
...  

2018 ◽  
Vol 5 (1) ◽  
pp. 18-31
Author(s):  
Seetaram Mohapatra ◽  
Nilofar Baral ◽  
Nilima Priyadarsini Mishra ◽  
Pravati Panda ◽  
Sabita Nayak

Introduction: Aza-Michael addition is an important reaction for carbon-nitrogen bond formation in synthetic organic chemistry. Expalantion: Conjugate addition of imidazole to α,β-unsaturated carbonyl/cyano compounds provides significant numbers of the biologically and synthetically interesting products, such as β-amino acids and β-lactams, which have attracted great attention for their use as key intermediates of anticancer agents, antibiotics and other drugs. Conclusion: This review addresses most significant method for the synthesis of N-substituted imidazole derivatives following Michael addition reaction of imidazole to α,β-unsaturated carbonyl/cyano compounds using ionic liquid/base/acid/enzyme as catalysts from year 2007-2017.


Author(s):  
Xin-Xing Wu ◽  
Hao Ye ◽  
Ming Li ◽  
Jianing Qian ◽  
Hong Dai ◽  
...  

A formal [6 + 1] annulation reaction provides an efficient route enabling rapid access to diverse caprolactams by the double C–C bond formation of the same site from methyl ketones.


2016 ◽  
Vol 14 (8) ◽  
pp. 2390-2394 ◽  
Author(s):  
Gui-Xin Cai ◽  
Jing Wen ◽  
Ting-Ting Lai ◽  
Dan Xie ◽  
Cheng-He Zhou

A K2CO3-catalyzed one-pot protocol involving sequential C–C bond formation and cleavage of aromatic β-diketones with α,β-unsaturated esters is developed to obtain 1,5-ketoesters, proceeding smoothly under mild conditions in up to 98% isolated yield.


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