Cu(i)/TF-BiphamPhos-catalyzed asymmetric Michael addition of cyclic ketimino esters to alkylidene malonates

2015 ◽  
Vol 13 (19) ◽  
pp. 5460-5466 ◽  
Author(s):  
Zhi-Yong Xue ◽  
Zhi-Min Song ◽  
Chun-Jiang Wang

Cu(i)-catalyzed asymmetric Michael addition of cyclic ketimino esters with alkylidene malonates has been developed for efficient construction of β-branched α-amino acids containing adjacent quaternary and tertiary stereogenic centers in good yields with excellent diastereo-/enantioselectivities.

2018 ◽  
Vol 360 (10) ◽  
pp. 1992-2004 ◽  
Author(s):  
György Szőllősi ◽  
Dániel Gombkötő ◽  
Attila Zsolt Mogyorós ◽  
Ferenc Fülöp

2015 ◽  
Vol 51 (52) ◽  
pp. 10554-10557 ◽  
Author(s):  
Jianlin Zhang ◽  
Yulong Zhang ◽  
Lili Lin ◽  
Qian Yao ◽  
Xiaohua Liu ◽  
...  

The asymmetric Michael addition/desymmetrization reaction catalyzed by a N,N′-dioxide-Sc(iii) complex was realized, leading to the succinimides with two kinds of stereogenic elements—atom chirality and axial chirality in up to 99% yield, 99% ee and >19 : 1 d.r.


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