scholarly journals Knoevenagel condensation reaction over acid-base bifunctional MgO/HMCM-22 catalysts

2013 ◽  
Vol 34 (3) ◽  
pp. 559-566 ◽  
Author(s):  
Wenfei ZHANG ◽  
Jinhua LIANG ◽  
Yanqiu LIU ◽  
Shoufei SUN ◽  
Xiaoqian REN ◽  
...  
Keyword(s):  
Knoevenagel Condensation ◽  
Condensation Reaction ◽  
Acid Base ◽  
Knoevenagel Condensation Reaction

Knoevenagel condensation reaction over acid–base bifunctional nanocrystalline CexZr1−xO2 solid solutions

2010 ◽  
Vol 269 (1) ◽  
pp. 110-121 ◽  
Author(s):  
Georgeta Postole ◽  
Biswajit Chowdhury ◽  
Bikash Karmakar ◽  
Kumari Pinki ◽  
Julie Banerji ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Knoevenagel Condensation ◽  
Condensation Reaction ◽  
Acid Base ◽  
Knoevenagel Condensation Reaction

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.

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