Electrophilicities of Benzaldehyde-Derived Iminium Ions: Quantification of the Electrophilic Activation of Aldehydes by Iminium Formation

2013 ◽  
Vol 135 (17) ◽  
pp. 6579-6587 ◽  
Author(s):  
Roland Appel ◽  
Saloua Chelli ◽  
Takahiro Tokuyasu ◽  
Konstantin Troshin ◽  
Herbert Mayr
Keyword(s):  
Iminium Ions ◽  
Electrophilic Activation

Enantioselective Radical Functionalization of Imines and Iminium Intermediates via Visible Light Photoredox Catalysis

Synthesis ◽  
2020 ◽  
Author(s):  
Jia-Jia Zhao ◽  
Hong-Hao Zhang ◽  
Shouyun Yu
Keyword(s):  
Visible Light ◽  
Asymmetric Synthesis ◽  
Carbonyl Compounds ◽  
Asymmetric Reduction ◽  
Chemical Transformations ◽  
Photoredox Catalysis ◽  
Radical Coupling ◽  
Mild Conditions ◽  
Iminium Ions ◽  
Radical Functionalization

Visible light photoredox catalysis has recently emerged as a powerful tool for the development of new and valuable chemical transformations under mild conditions. Visible-light promoted enantioselective radical transformations of imines and iminium intermediates provide new opportunities for the asymmetric synthesis of amines and asymmetric β-functionalization of unsaturated carbonyl compounds. In this review, the advance in the catalytic asymmetric radical functionalization of imines, as well as iminium intermediates, are summarized. 1 Introduction 2 The enantioselective radical functionalization of imines 2.1 Asymmetric reduction 2.2 Asymmetric cyclization 2.3 Asymmetric addition 2.4 Asymmetric radical coupling 3 The enantioselective radical functionalization of iminium ions 3.1 Asymmetric radical alkylation 3.2 Asymmetric radical acylation 4 Conclusion

Facile synthesis of indene and fluorene derivatives through AlCl3 -catalyzed cyclization of in situ formed iminium ions

2017 ◽  
Vol 31 (12) ◽  
pp. e3863 ◽  
Author(s):  
Lei Chen ◽  
Wei Teng ◽  
Xin-Le Geng ◽  
Yi-Fan Zhu ◽  
Yong-Hong Guan ◽  
...  
Keyword(s):  
Facile Synthesis ◽  
Iminium Ions

Electrophilic activation of alkynes for enyne cycloisomerization reactions with in situ generated early/late heterobimetallic Pt–Ti catalysts

2016 ◽  
Vol 45 (24) ◽  
pp. 9770-9773 ◽  
Author(s):  
Michael R. Talley ◽  
Ryjul W. Stokes ◽  
Whitney K. Walker ◽  
David J. Michaelis
Keyword(s):  
Room Temperature ◽  
Electrophilic Activation ◽  
Early Late

In situ assembly of a heterobimetallic Pt–Ti catalyst from a titanium-containing phosphinoamide ligand enables fast room temperature catalysis in enyne cycloisomerization reactions.

Strain-Release Electrophilic Activation viaE-Cycloalkenones

2007 ◽  
Vol 9 (20) ◽  
pp. 3893-3896 ◽  
Author(s):  
Joseph Moran ◽  
Peter Dornan ◽  
André M. Beauchemin
Keyword(s):  
Strain Release ◽  
Electrophilic Activation
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