Solution Synthesis and Characterization of Aza-β3-peptides (Nα-Substituted Hydrazino Acetic Acid Oligomers)

2001 ◽  
Vol 66 (14) ◽  
pp. 4923-4929 ◽  
Author(s):  
Arnaud Cheguillaume ◽  
Arnaud Salaün ◽  
Sourisak Sinbandhit ◽  
Michel Potel ◽  
Philippe Gall ◽  
...  
2016 ◽  
Vol 13 (2) ◽  
pp. 244-252
Author(s):  
Baghdad Science Journal

In this paper, some chalcone derivatives (C1, C2) were synthesized based on the reaction of equal amount of substituted acetophenone and substituted banzaldehyde in basic medium. Oxazine and thiazine derivatives were prepared from the reaction of chalcones (C1-C2) with urea and thiourea respectively in a basic medium. Pyrazole derivatives were prepared based on the reaction of chalcones with hydrazine mono hydrate or phenyl hydrazine in the presence of glacial acetic acid as a catalyst. The new synthesized compounds were identified using various physical techniques like1 H-NMR and FT-IR spectra.


2015 ◽  
Vol 33 (6) ◽  
pp. 591-598 ◽  
Author(s):  
Cheng JI ◽  
Liyu JI ◽  
Liuchao LIAN ◽  
Liming SHEN ◽  
Xiaoyan ZHANG ◽  
...  

2003 ◽  
Vol 100 (3) ◽  
pp. 221-224 ◽  
Author(s):  
W. Chen ◽  
L.Q. Mai ◽  
Q. Xu ◽  
Q.Y. Zhu ◽  
H.P. Yang

e-Polymers ◽  
2009 ◽  
Vol 9 (1) ◽  
Author(s):  
Abdol Reza Hajipour ◽  
Parniyan Roosta ◽  
Saeed Zahmatkesh ◽  
Arnold E. Ruoho

Abstract N,N´-(3,3´,4,4´-Benzophenonetetracarboxylic)-3,3´,4,4´-diimido-di-Lamino acids (1a-1d) and N,N´-pyromelliticdiimido-di-L-amino acids (2a-2d) are prepared from the reaction of 3,3´,4,4´-benzenetetracarboxylic-3,3´,4,4´- dianhydride or pyromellitic dianhydride with the corresponding L-amino acids in a solution of glacial acetic acid/pyridine (3:2) at refluxing temperature. 4-(4-((4- Hydroxyphenylimino)methyl)benzylidene amino) phenol (3) is prepared from 4- amino phenol and terephthaldialdehyde in refluxing ethanol. Interfacial polycondensation method was used to prepare the corresponding polymers (PEII1-8) in two immiscible solvents (water/dichloromethane). The resulting poly(esterimide- imine)s (PEIIs) having good inherent viscosities (0.13-1.25 dl g-1), optical activity and thermal stabilities is obtained in high yields.


2009 ◽  
Vol 6 (s1) ◽  
pp. S324-S328 ◽  
Author(s):  
Alireza Badiei ◽  
Javad Gholami ◽  
Yeganeh Khaniani

Direct oxidation of benzene to phenol in liquid phase by H2O2peroxide was examined over Ti/ LUS-1 catalyst in methanol and acetic acid as solvents. The maximum yield and selectivity of the phenol produced was obtained in the presence of acetic acid. It can be attributed to the stabilization of H2O2as peroxy acetic acid species in the radical mechanism for this reaction. Acetic acid interacts with hydrogen peroxide over Ti/LUS-1 and produces acetoxy radicals.


1989 ◽  
Vol 32-33 ◽  
pp. 678-690 ◽  
Author(s):  
H HOROWITZ ◽  
A JACOBSON ◽  
J NEWSAM ◽  
J LEWANDOWSKI ◽  
M LEONOWICZ

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