ChemInform Abstract: Chiral Bicyclic Guanidine as a Versatile Broensted Base Catalyst for the Enantioselective Michael Reactions of Dithiomalonates and β-Keto Thioesters.

ChemInform ◽  
2008 ◽  
Vol 39 (14) ◽  
Author(s):  
Weiping Ye ◽  
Zhiyong Jiang ◽  
Yujun Zhao ◽  
Serena Li Min Goh ◽  
Dasheng Leow ◽  
...  
Keyword(s):  
Base Catalyst ◽  
Michael Reactions

Chiral Bicyclic Guanidine as a Versatile Brønsted Base Catalyst for the Enantioselective Michael Reactions of Dithiomalonates and β-Keto Thioesters

2007 ◽  
Vol 349 (16) ◽  
pp. 2454-2458 ◽  
Author(s):  
Weiping Ye ◽  
Zhiyong Jiang ◽  
Yujun Zhao ◽  
Serena Li Min Goh ◽  
Dasheng Leow ◽  
...  
Keyword(s):  
Base Catalyst ◽  
Michael Reactions ◽  
Brønsted Base

Creation of a monomeric vanadate species in an apatite framework as an active heterogeneous base catalyst for Michael reactions in water

2010 ◽  
Vol 152 (1-4) ◽  
pp. 93-98 ◽  
Author(s):  
Kiyotomi Kaneda ◽  
Takayoshi Hara ◽  
Norifumi Hashimoto ◽  
Takato Mitsudome ◽  
Tomoo Mizugaki ◽  
...  
Keyword(s):  
Base Catalyst ◽  
Michael Reactions ◽  
Heterogeneous Base Catalyst ◽  
Heterogeneous Base

Enantioselective Michael Addition of Malonates to Enones

2020 ◽  
Vol 24 (7) ◽  
pp. 746-773
Author(s):  
Péter Bakó ◽  
Tamás Nemcsok ◽  
Zsolt Rapi ◽  
György Keglevich
Keyword(s):  
Michael Addition ◽  
Activity Relationship ◽  
Chalcone Derivatives ◽  
Michael Additions ◽  
Michael Reactions ◽  
Structure Activity ◽  
Cyclic Enones ◽  
Michael Acceptors ◽  
Relationship Of ◽  
Enantioselective Catalysts

: Many catalysts were tested in asymmetric Michael additions in order to synthesize enantioenriched products. One of the most common reaction types among the Michael reactions is the conjugated addition of malonates to enones making it possible to investigate the structure–activity relationship of the catalysts. The most commonly used Michael acceptors are chalcone, substituted chalcones, chalcone derivatives, cyclic enones, while typical donors may be dimethyl, diethyl, dipropyl, diisopropyl, dibutyl, di-tert-butyl and dibenzyl malonates. This review summarizes the most important enantioselective catalysts applied in these types of reactions.

Cesium-modified hollow ZSM-5: efficient acid-base catalyst for side-chain alkylation of 2-picoline with formaldehyde

2021 ◽  
pp. 117983
Author(s):  
Zhe Hong ◽  
Guoqing Zhao ◽  
Chuanfang Xiong ◽  
Wenzhi Jia ◽  
Fangtang Huang ◽  
...  
Keyword(s):  
Side Chain ◽  
Base Catalyst ◽  
Acid Base

scholarly journals Synthesis and Catalytic Activities of 3-Decyl-β-proline for Michael Reactions in Water without an Organic Solvent

ACS Omega ◽  
2021 ◽  
Author(s):  
Kazuhiro Nagata ◽  
Chihiro Nakagawa ◽  
Wakana Yokoyama ◽  
Haruka Usui ◽  
Rikako Mochizuki ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Catalytic Activities ◽  
Michael Reactions

scholarly journals Evidence for lysine 80 as general base catalyst of leucine dehydrogenase.

1993 ◽  
Vol 268 (36) ◽  
pp. 27039-27045
Author(s):  
T Sekimoto ◽  
T Matsuyama ◽  
T Fukui ◽  
K Tanizawa
Keyword(s):  
Base Catalyst ◽  
Leucine Dehydrogenase ◽  
General Base

Potassium Exchanged Layered Zirconium Phosphate as Base Catalyst for the Desilylation of Phenol Silyl Ethers

2000 ◽  
Vol 30 (17) ◽  
pp. 3181-3187 ◽  
Author(s):  
Massimo Curini ◽  
Francesco Epifano ◽  
Maria Carla Marcotullio ◽  
Ornelio Rosati ◽  
Monia Rossi ◽  
...  
Keyword(s):  
Zirconium Phosphate ◽  
Base Catalyst ◽  
Silyl Ethers

Formation of zwitterionic salts via three-component reaction of benzimidazolium bromides, aromatic aldehydes and 1,3-indanedione

RSC Advances ◽  
2016 ◽  
Vol 6 (87) ◽  
pp. 84379-84387 ◽  
Author(s):  
Gong Jin ◽  
Jing Sun ◽  
Chao-Guo Yan
Keyword(s):  
Aromatic Aldehydes ◽  
Base Catalyst ◽  
Three Component Reaction

The three-component reaction in ethanol in the presence of triethylamine as base catalyst resulted in the unusual charge-separated zwitterionic salts in good yields.

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