نتایج جستجو برای: aromatic amines

تعداد نتایج: 60265  

Abdolreza Hajipour, Fatemeh Mohammadsaleh

A simple and efficient one-pot method for the preparation of aromatic iodides has been developed by sequential diazotization–iodination of aromatic amines employing sodium nitrite and sodium iodide in the presence of acidic ionic liquid N-methyl-2-pyrrolidonum hydrosulfate ([H-NMP]HSO4). The diazonium salts that are formed by this ionic liquid are stable at room temperature and r...

Journal: :Organic & biomolecular chemistry 2012
Ying Xie Hongjie Pan Xiao Xiao Songlei Li Yian Shi

An asymmetric biomimetic transamination of aromatic ketones to optically active amines with o-HOPhCH(2)NH(2) as amine source catalyzed by hydroquinine-derived chiral base is described. Up to 85% ee was obtained.

Journal: :Organic & biomolecular chemistry 2012
Sandro Cacchi Giancarlo Fabrizi Eleonora Filisti Antonella Goggiamani Antonia Iazzetti Loredana Maurone

A novel palladium-catalyzed approach to 2-amino ketones from arylpropargylic carbonates bearing neutral, electron-rich, and electron-poor aromatic rings and cyclic secondary amines containing useful functional groups such as cyano, chloro, and bromo substituents has been developed.

Journal: :Chemical communications 2013
Pengchong Xue Qiuxia Xu Peng Gong Chong Qian Aimin Ren Yuan Zhang Ran Lu

A hydrogen bonded complex could self-assemble into one-dimensional fibers in its gel phase. The fibrous film could be used as a sensor to detect and discriminate aromatic and aliphatic amines.

Journal: :Chemical communications 2014
Gobinda Das Digambar Balaji Shinde Sharath Kandambeth Bishnu P Biswal Rahul Banerjee

A variety of aromatic amines/hydrazides and aldehydes have been utilized for the construction of crystalline COFs at a faster rate and in high yield, irrespective of their reactivity and solubility using the Liquid-Assisted Grinding (LAG) method.

Journal: :Organic & biomolecular chemistry 2011
Simona Prosperini Nadia Pastori Alessandra Ghilardi Angelo Clerici Carlo Punta

We report a new and fast domino synthesis of aminoalcohols under mild conditions. The free-radical reaction of aliphatic and aromatic amines with alcohol cosolvents is promoted by means of the TiCl(4)-Zn/t-BuOOH system. According to the proposed mechanism, the amine reacts with two molecules of alcohol in an electrophilic-nucleophilic cascade process. This procedure, if compared with the TiCl(3...

2014
Xing-Jun Tu Wen-Juan Hao Qin Ye Shuang-Shuang Wang Bo Jiang Guigen Li Shu-Jiang Tu

A novel four-component bicyclization strategy has been established, allowing a flexible and practical approach to 37 examples of multicyclic pyrazolo[3,4-b]pyridines from low-cost and readily accessible arylglyoxals, pyrazol-5-amines, aromatic amines, 4-hydroxy-6-methyl-2H-pyran-2-one, and cyclohexane-1,3-diones. The polysubstituted cyclopenta[d]pyrazolo[3,4-b]pyridines were stereoselectively s...

2015
MINA MAHMOUDI

Reductive aminationa varietyof aldehydes with different anilines has been performed byZn(BH4)2/ MgBr2as reducing system in THF at room temperature in high to excellent yields of the corresponding secondary amines (80-90%).

Journal: :Angewandte Chemie 2013
Kassem Beydoun Thorsten vom Stein Jürgen Klankermayer Walter Leitner

Journal: :Chemical communications 2013
Abdul Karim Haji Dheere Nadiya Yusuf Antony Gee

A rapid urea radiolabelling methodology has been developed. [(11)C]CO2 was activated by 1,8-diazabicycloundec-7-ene (DBU) in the presence of aliphatic and aromatic amines and reacted with Mitsunobu reagents to produce asymmetric (11)C radiolabelled ureas in high radiochemical yields.

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