Bis-Acenaphthoquinone Diimides with High Electron Deficiency and Good Coplanar Conformation

2021 ◽  
Author(s):  
Xin Yang ◽  
Yongkun Yan ◽  
Weixuan Zeng ◽  
Ying Song ◽  
Wenhao Li ◽  
...  
Keyword(s):  
Knoevenagel Condensation ◽  
Condensation Reaction ◽  
High Electron ◽  
Knoevenagel Condensation Reaction ◽  
Electron Deficiency

A series of novel bis-acenaphthoquinone diimides featuring a highly electron-deficient bis-acenaphthoquinone core are facilely synthesized via Knoevenagel condensation reaction. The diimides show high electron deficiency and good coplanar conformation, together...

Synthesis of β- and β,β-substituted Morita–Baylis–Hillman adducts using a two-step protocol

2012 ◽  
Vol 90 (5) ◽  
pp. 450-463 ◽  
Author(s):  
David I. Magee ◽  
Same Ratshonka ◽  
Jessica McConaghy ◽  
Maggie Hood
Keyword(s):  
Knoevenagel Condensation ◽  
Condensation Reaction ◽  
Facile Synthesis ◽  
Aliphatic Aldehydes ◽  
Tert Butyl ◽  
Keto Esters ◽  
Knoevenagel Condensation Reaction

The synthesis of a large number of β- and β,β-substituted keto esters was successful by the use of the Knoevenagel condensation reaction. The stereoselectivity of these reactions was improved by alteration of various substituent groups. Although there were few examples of complete Z selectivity, the use of tert-butyl acetoacetate with either aromatic or aliphatic aldehydes afforded Z selectivity. The selective reductions of these substituted keto esters was successfully achieved by using a combination of NaBH4 and CeCl3·7H2O or Yb(OTf)3, which allowed a facile synthesis of a large number of stereochemically pure substituted Morita–Baylis–Hillman adducts, including β,β-substituted adducts.

Bimodal self-assembly of an amphiphilic gelator into a hydrogel-nanocatalyst and an organogel with different morphologies and photophysical properties

2016 ◽  
Vol 52 (89) ◽  
pp. 13136-13139 ◽  
Author(s):  
Papri Sutar ◽  
Tapas Kumar Maji
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Knoevenagel Condensation ◽  
Photophysical Properties ◽  
Condensation Reaction ◽  
Knoevenagel Condensation Reaction ◽  
A Charge

Solvent-dependent, bimodal self-assembly of a flexible, amphiphilic LMWG results in a charge-transfer hydrogel and an organogel with different nano-morphologies and the hydrogel is used as a nanocatalyst for Knoevenagel condensation reaction.

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