Highly Efficient Aza-Michael Reactions of Enones with Carbamates Using a Combination of Quaternary Ammonium Salts and BF3×OEt2 as a Catalyst.

ChemInform ◽  
2004 ◽  
Vol 35 (15) ◽  
Author(s):  
Li-Wen Xu ◽  
Lyi Li ◽  
Chun-Gu Xia ◽  
Shao-Lin Zhou ◽  
Jing-Wei Li ◽  
...  
Keyword(s):  
Quaternary Ammonium ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Highly Efficient ◽  
Michael Reactions

Cinchona alkaloid-based chiral catalysts act as highly efficient multifunctional organocatalysts for the asymmetric conjugate addition of malonates to nitroolefins

2015 ◽  
Vol 13 (40) ◽  
pp. 10216-10225 ◽  
Author(s):  
Veeramanoharan Ashokkumar ◽  
Ayyanar Siva
Keyword(s):  
Michael Addition ◽  
Quaternary Ammonium ◽  
Conjugate Addition ◽  
Quaternary Ammonium Salts ◽  
Cinchona Alkaloid ◽  
Ammonium Salts ◽  
Addition Reactions ◽  
Chiral Catalysts ◽  
Reaction Conditions ◽  
Highly Efficient

New pentaerythritol tetrabromide based chiral quaternary ammonium salts have been prepared and used as organocatalysts for enantioselective Michael addition reactions between various nitroolefins and Michael donors under mild reaction conditions with very good chemical yields and ee's.

Thioxanthone acetic acid ammonium salts: highly efficient photobase generators based on photodecarboxylation

RSC Advances ◽  
2015 ◽  
Vol 5 (66) ◽  
pp. 53342-53348 ◽  
Author(s):  
Xiaoqing Dong ◽  
Peng Hu ◽  
Guigang Zhu ◽  
Zhiquan Li ◽  
Ren Liu ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Quaternary Ammonium ◽  
Active Species ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Highly Efficient ◽  
Photobase Generators

Novel photobase generators, which contain thioxanthone as the chromophore and different quaternary ammonium salts as latent active species, can efficiently catalyze the thiol–epoxy polymerization via photoinduced decarboxylation.

Highly efficient reduction of carbonyls, azides, and benzyl halides by NaBH4 in water catalyzed by PANF-immobilized quaternary ammonium salts

2016 ◽  
Vol 18 (9) ◽  
pp. 2726-2735 ◽  
Author(s):  
Jianguo Du ◽  
Gang Xu ◽  
Huikun Lin ◽  
Guangwei Wang ◽  
Minli Tao ◽  
...  
Keyword(s):  
Quaternary Ammonium ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Polyacrylonitrile Fiber ◽  
Highly Efficient ◽  
Efficient Reduction ◽  
Benzyl Halides

Highly efficient, easily recyclable and reusable polyacrylonitrile fiber-supported quaternary ammonium salts for the reduction of aldehydes, ketones, azides, and benzyl halides in water using NaBH4 as the reducing reagent.

scholarly journals Sustainable triazine-derived quaternary ammonium salts as antimicrobial agents

RSC Advances ◽  
2021 ◽  
Vol 11 (45) ◽  
pp. 28092-28096
Author(s):  
Andrea Morandini ◽  
Emanuele Spadati ◽  
Benedetta Leonetti ◽  
Roberto Sole ◽  
Vanessa Gatto ◽  
...  
Keyword(s):  
Quaternary Ammonium ◽  
Antimicrobial Agents ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Highly Efficient

The first examples of highly efficient antimicrobial triazine-derived bis imidazolium quaternary ammonium salts (TQAS) are reported.

Sign in / Sign up

Export Citation Format

Share Document