Application of surface active amino acid ionic liquids as phase-transfer catalyst

2020 ◽  
Vol 303 ◽  
pp. 112607 ◽  
Author(s):  
Emil Szepiński ◽  
Patrycja Smolarek ◽  
Maria J. Milewska ◽  
Justyna Łuczak
Keyword(s):  
Ionic Liquids ◽  
Amino Acid ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Active Amino Acid ◽  
Surface Active

Dual role of ionic liquids as phase transfer catalyst and solvent for glycosidation reactions

RSC Advances ◽  
2011 ◽  
Vol 1 (9) ◽  
pp. 1721 ◽  
Author(s):  
Vineet Kumar ◽  
Ian Jamie Talisman ◽  
Omar Bukhari ◽  
Jacqueline Razzaghy ◽  
Sanjay V. Malhotra
Keyword(s):  
Ionic Liquids ◽  
Phase Transfer ◽  
Dual Role ◽  
Phase Transfer Catalyst

scholarly journals Synthesis of Novel N1and N2Indazole Derivatives

2012 ◽  
Vol 9 (4) ◽  
pp. 1676-1682 ◽  
Author(s):  
Prasanna Bethanamudi ◽  
Srinivas Bandari ◽  
Kanakaraju Sankari ◽  
Amarnath Velidandi ◽  
G. V. P. Chandramouli
Keyword(s):  
Ionic Liquids ◽  
Phase Transfer ◽  
Phase Transfer Catalyst

The alkylation of 5-cyano indazoles 2 in the presence of readily available imidizolium salts (ionic liquids) (Bmim)BF4as phase transfer catalyst were performed to afford the regio isomersN1-andN2-(substituted alkyl)-5-cyano indazoles. TheN1-alkylated cyano indazoles were converted to the correspondingN1-(substituted alkyl)-5-aminomethyl and 5-carbaldehydes5(a-f)and6(a-f).

Novel α-amino acid-derived phase-transfer catalyst application to a highly enantio- and diastereoselective nitro-Mannich reaction

2017 ◽  
Vol 15 (43) ◽  
pp. 9234-9242 ◽  
Author(s):  
Yuxin Liu ◽  
Zhonglin Wei ◽  
Yu Liu ◽  
Jungang Cao ◽  
Dapeng Liang ◽  
...  
Keyword(s):  
Amino Acid ◽  
Mannich Reaction ◽  
Phase Transfer ◽  
Phase Transfer Catalyst

Very broad substrate generality was observed, and the products were achieved in high enantio-/diastereoselectivities (90–>99.9% ee, 9 : 1 to 11 : 1 dr).

Ir/PTC cooperatively catalyzed asymmetric umpolung allylation of α-imino ester enabled synthesis of α-quaternary amino acid derivatives bearing two vicinal stereocenters

2017 ◽  
Vol 53 (12) ◽  
pp. 1985-1988 ◽  
Author(s):  
Yong-Liang Su ◽  
Yu-Hui Li ◽  
Yu-Gen Chen ◽  
Zhi-Yong Han
Keyword(s):  
Amino Acid ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Amino Acid Derivatives ◽  
Imino Esters

A novel Ir/PTC (phase-transfer catalyst) cooperatively catalyzed asymmetric umpolung allylation of simple α-imino esters is developed and it provides facile access to α-quaternary amino acid derivatives bearing two vicinal stereocenters.

scholarly journals Quaternary β2,2-amino acid derivatives by asymmetric addition of isoxazolidin-5-ones to para-quinone methides

2020 ◽  
Vol 56 (4) ◽  
pp. 579-582 ◽  
Author(s):  
Andreas Eitzinger ◽  
Michael Winter ◽  
Johannes Schörgenhumer ◽  
Mario Waser
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Amino Acid Derivatives ◽  
Quinone Methides ◽  
Chiral Phase ◽  
Asymmetric Addition

Novel densely functionalized β2,2-amino acids were obtained in almost enantiopure form using down to 20 ppm of a chiral phase-transfer catalyst.

Conversion of l ‐Tryptophan Derivatives into Biologically Active Amino Acid Ionic Liquids

2021 ◽  
Vol 6 (22) ◽  
pp. 5614-5621
Author(s):  
Daria Szymaniak ◽  
Tomasz Kleiber ◽  
Marta Wojcieszak ◽  
Katarzyna Materna ◽  
Juliusz Pernak
Keyword(s):  
Ionic Liquids ◽  
Amino Acid ◽  
Biologically Active ◽  
Active Amino Acid ◽  
Tryptophan Derivatives
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