Phosphonodithioformate-amine coupling reaction: from basic discovery to application for the functionalization of liposomes

2021 ◽  
pp. 1-6
Author(s):  
Montassar Khalil ◽  
Dany Jeanne Dit Fouque ◽  
Mathieu Berchel ◽  
Aurore Fraix ◽  
Salvatore Sortino ◽  
...  
Keyword(s):  
Coupling Reaction ◽  
Amine Coupling

Efficient O-phthalaldehyde-amine Coupling Reaction for the Synthesis of Bottlebrush Polymer under Physiological Conditions

2021 ◽  
Author(s):  
Jianbing Huang ◽  
Mao Shi ◽  
Hui Liang ◽  
Lu Jiang
Keyword(s):  
Coupling Reaction ◽  
New Method ◽  
Physiological Conditions ◽  
Catalyst Free ◽  
Grafting Onto ◽  
Amine Coupling

A new method to prepare bottlebrush polymer poly(2-aminoethyl methacrylate hydrochloride)-graft-poly(N,N-dimethylacrylamide) (PAMA-g-PDMA) by the combination of “grafting onto” and catalyst-free o-phthalaldehyde (OPA)-amine coupling reaction was proposed. The PAMA backbone with primary...

scholarly journals High Yielding, Base Catalyzed C6 Regioselective Amination and N9 Alkylation in Purine Nucleotide

2019 ◽  
Vol 31 (12) ◽  
pp. 2871-2874
Author(s):  
Gautamkumar Dhuda ◽  
Khushal Kapadiya ◽  
Paresh Ladwa ◽  
Bhavna Godhaniya ◽  
Jayesh Modha
Keyword(s):  
Coupling Reaction ◽  
Purine Nucleoside ◽  
Regioselective Synthesis ◽  
Secondary Amines ◽  
Purine Nucleotide ◽  
Reaction Conditions ◽  
Simple Reaction ◽  
Amine Coupling

2,6-Dichloropurine is an interesting new nucleoside which gave regioselectively various 2-derivatized or 6-derivatized purines by using a secondary amines. An efficient, simple and regioselective synthesis of C6 morpholine, N9 alkylated purine nucleoside derivatives were attained via chloro-amine coupling reaction between 2,6-dichloropurine with morpholine followed by commercial alkylation method using DMF and K2CO3. Over the traditionally used protocols and procedure, it have been exhibited advance benefits such as admirable yield, simple reaction conditions and modest influence.

Oxygen-mediated formation of MoSx-doped hollow carbon dots for visible light-driven photocatalysis

2016 ◽  
Vol 4 (38) ◽  
pp. 14796-14803 ◽  
Author(s):  
Jung Hyun Park ◽  
Faizan Raza ◽  
Su-Ji Jeon ◽  
DaBin Yim ◽  
Hye-In Kim ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Carbon Dots ◽  
Room Temperature ◽  
Coupling Reaction ◽  
Visible Light Driven ◽  
Hollow Carbon ◽  
Amine Coupling

MoSx-doped hollow carbon dots exhibit outstanding photocatalytic activity in the aerobic oxidative amine coupling reaction at room temperature.

Simultaneous Spectrophotometric Determination of Salbutamol by Coupling with Diazotized 4-Aminobenzoic acid

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Hind Hadi ◽  
Gufran Salim
Keyword(s):  
Pharmaceutical Preparations ◽  
Coupling Reaction ◽  
Dosage Forms ◽  
Water Soluble ◽  
Trace Determination ◽  
Aminobenzoic Acid ◽  
Optimum Conditions ◽  
Colored Product ◽  
Versus Concentration

A simple, rapid and sensitive spectrophotmetric method for trace determination of salbutamol (SAL) in aqueous solution and in pharmaceutical preparations is described. The method is based on the diazotization coupling reaction of the intended compound with 4-amino benzoic acid (ABA) in alkaline medium to form an intense orange, water soluble dye that is stable and shows maximum absorption at 410 nm. A graph of absorbance versus concentration indicates that Beer’s law is obeyed over the concentration range of 0.5-30 ppm, with a molar absorbtivity 3.76×104 L.mol-1 .cm-1 depending on the concentration of SAL. The optimum conditions and stability of the colored product have been investigated and the method was applied successfully to the determination of SAL in dosage forms.

Ferromagnetic Chain Based on Verdazyl-Nitroxide Diradical

2020 ◽  
Author(s):  
Evgeny Tretyakov ◽  
Svetlana Zhivetyeva ◽  
Pavel Petunin ◽  
Dmitry Gorbunov ◽  
Nina Gritsan ◽  
...  
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Ferromagnetic Coupling ◽  
Nitronyl Nitroxide ◽  
Triplet Ground State ◽  
One Dimensional ◽  
Cross Coupling Reaction ◽  
Palladium Catalyzed ◽  
Ferromagnetic Chain ◽  
High Yields

<p>Verdazyl-nitroxide diradicals were synthesized using the palladium-catalyzed cross-coupling reaction of the corresponding iodoverdazyls with a nitronyl nitroxide-2-ide gold(I) complex with high yields (up to 82%). The synthesized diradicals were found to be highly thermally stable and have a singlet (D<i>E</i><sub>ST</sub> » -64 cm<sup>–1</sup>) or triplet ground state (D<i>E</i><sub>ST</sub> ³ 25 and 100 cm<sup>–1</sup>), depending on which canonical hydrocarbon diradical type they belong to. Upon crystallization, triplet diradicals form unique one-dimensional (1D) spin <i>S</i> = 1 chains of organic diradicals with intrachain ferromagnetic coupling of <i>J</i>′/<i>k</i><sub>B</sub> from 3 to 6 K.</p>

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