Diffusion-Enhanced Amide Bond Formation on a Solid Support

2019 ◽  
Vol 23 (12) ◽  
pp. 2733-2739 ◽  
Author(s):  
Johnny N. Naoum ◽  
Israel Alshanski ◽  
Agata Gitlin-Domagalska ◽  
Moshe Bentolila ◽  
Chaim Gilon ◽  
...  
2019 ◽  
Author(s):  
Johnny N Naoum ◽  
Israel Alshanski ◽  
Agata Gitlin-Domagalska ◽  
Moshe Bentolila ◽  
Chaim Gilon ◽  
...  

Performing amino acids coupling reactions on solid support using fast overhead stirring is far more efficient than the common shaking mixing methods. Stirring does not harm the polystyrene beads and allows to decrease dramatically the amount of reagents used and wasted in these transformations.


2019 ◽  
Author(s):  
Johnny N Naoum ◽  
Israel Alshanski ◽  
Agata Gitlin-Domagalska ◽  
Moshe Bentolila ◽  
Chaim Gilon ◽  
...  

Performing amino acids coupling reactions on solid support using fast overhead stirring is far more efficient than the common shaking mixing methods. Stirring does not harm the polystyrene beads and allows to decrease dramatically the amount of reagents used and wasted in these transformations.


2018 ◽  
Vol 16 (1) ◽  
pp. 30-33
Author(s):  
Ashish Kumar ◽  
Yahya E. Jad ◽  
Ayman El-Faham ◽  
Beatriz G. de la Torre ◽  
Fernando Albericio

A new phosphonium based coupling reagent DEPO-B has been synthesized from 5- (hydroxyimino)-1,3-dimethylpyrimidine-2,4,6 (1H,3H,5H)-trione (Oxyma B) and diethyl chlorophosphate in presence of base. It is a solid material and the hydrolytic stability and solubility was evaluated for confirming its capability for usage in automated peptide synthesizer.


2014 ◽  
Vol 11 (4) ◽  
pp. 592-604 ◽  
Author(s):  
Natalia Lukasik ◽  
Ewa Wagner-Wysiecka

2017 ◽  
Vol 15 (30) ◽  
pp. 6367-6374 ◽  
Author(s):  
Song-Lin Zhang ◽  
Hai-Xing Wan ◽  
Zhu-Qin Deng

A detailed computational study is presented on the reaction mechanism of ynamide-mediated condensation of carboxylic acids with amines to produce amides, which elucidates the reactivity pattern of the coupling reagent ynamide and discloses crucial bifunctional catalytic effects of the carboxylic acid substrate during aminolysis.


Author(s):  
Truong Thanh Tung ◽  
John Nielsen

Herein, we report the green, expedite, and practically simple protocol for direct coupling of carboxylate salts and ammonium salts under ACN/H2O conditions at room temperature without the addition of tertiary...


2017 ◽  
Vol 82 (17) ◽  
pp. 9087-9096 ◽  
Author(s):  
Yuan-Ye Jiang ◽  
Ling Zhu ◽  
Yujie Liang ◽  
Xiaoping Man ◽  
Siwei Bi

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