Results 51 to 60 of about 3,911 (190)

Intramolecular Carbene C-H Insertion Reactions of 2-Diazo-2-sulfamoylacetamides

Molecules, 2019
The intramolecular C-H insertions of carbenes derived from 2-diazo-2-sulfamoylacetamides were studied. 2-Diazo-2-sulfamoylacetamides were first prepared from chloroacetyl chloride and secondary amines through acylation followed by sequential treatments ...
Chuqiang Que, Peipei Huang, Zhanhui Yang, Ning Chen, Jiaxi Xu   +4 more
doaj   +1 more source

Synthesis and Antimicrobial Activity of Some Novel Substituted Piperazinyl-quinazolin-3(4H)-ones

E-Journal of Chemistry, 2008
Several substituted-quinazolin-3(4H)-ones were synthesized by condensation of 2-chloro-N-(4-oxo-substituted-quinazolin-3(4H)-yl)-acetamides with various substituted piperazines through single step reaction. Elemental analysis, IR, 1HNMR and mass spectral
N. M. Raghavendra, P. P. Thampi, P. M. Gurubasavarajaswamy   +2 more
doaj   +1 more source

Approach for the synthesis of N-phenylamides from β-ketobutylanilides using dimethylformamide and dimethylacetamide as the acyl donors

Journal of Saudi Chemical Society, 2015
A new method including the sequence of a CN bond formation of β-keto amides with N,N-dimethylamides and subsequently another two CN bonds cleavage has been developed in the presence of hydrochloric acid.
Cui Chen, Liquan Tan, Peng Zhou
doaj   +1 more source

N-(Thiazol-2-yl)acetamide [PDF]

Acta Crystallographica Section E Structure Reports Online, 2008
The title compound, C(5)H(6)N(2)OS, was synthesized from acetyl chloride and 2-amino-thia-zole in dry acetone. The asymmetric unit contains two mol-ecules. The crystal structure is stabilized by N-H⋯N and C-H⋯O hydrogen bonds.
Uzma Yunus, Muhammad Kalim Tahir, Moazzam Hussain Bhatti, Wai-Yeung Wong   +3 more
openaire   +3 more sources

Pd(II)‐Catalyzed Strategies for the β‐Arylation of α‐Amino Acids: An Overview

Chemistry – A European Journal, EarlyView.
The graphical abstract summarizes the review “Pd(II)‐Catalyzed Strategies for the β‐Arylation of α‐Amino Acids: An Overview”, highlighting representative Pd(II)‐catalyzed methods for the β‐arylation of α‐amino acids. Key mechanistic features, substrate diversity, and synthetic relevance of these transformations are showcased. Abstract Metal‐catalyzed C─
Davide Illuminati, Claudio Trapella, Vinicio Zanirato, Virginia Cristofori, Anna Fantinati   +4 more
wiley   +1 more source

Methyl on the Bridge: 2‐Methyl Propellane as Precursor for 1,3‐Substituted 2‐Methylated Bicyclo[1.1.1]Pentanes

Chemistry – A European Journal, EarlyView.
The synthesis of 2‐methyl propellane and its conversion to various 1,2‐ and 1,2,3‐di‐ and trisubstituted bicyclopentanes is reported. Abstract Bicyclo[1.1.1]pentanes (BCPs) have emerged as isosteric replacements for mono‐ and para‐substituted benzene rings in medicinal and materials applications, involving substitution at the BCP bridgehead (1,3 ...
Sean R. Verschaeve, Mariana Gomes Manso, Tibo Van Eeckhoorn, Mark E. Light, Bruno Linclau   +4 more
wiley   +1 more source

One-pot synthesis of substituted pyrrolo[3,4-b]pyridine-4,5-diones based on the reaction of N-(1-(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)-2-oxo-2-arylethyl)acetamide with amines

Beilstein Journal of Organic Chemistry, 2019
The condensation of primary amines with N-(1-(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)-2-oxo-2-arylethyl)acetamides was explored. Thus, a previously unknown recyclization of the starting material was observed in acidic ethanol in the presence of an amine,
Valeriya G. Melekhina, Andrey N. Komogortsev, Boris V. Lichitsky, Vitaly S. Mityanov, Artem N. Fakhrutdinov, Arkady A. Dudinov, Vasily A. Migulin, Yulia V. Nelyubina, Elizaveta K. Melnikova, Michail M. Krayushkin   +9 more
doaj   +1 more source

Design and synthesis of some novel 2-(3-methyl-2-oxoquinoxalin-1(2H)-yl)-N-(4-(substituted)phenyl)acetamide derivatives for biological evaluation as anticonvulsant agents

Bulletin of Faculty of Pharmacy Cairo University, 2013
A new series of 2-(3-methyl-2-oxoquinoxalin-1(2H)-yl)-N-(4-substitutedphenyl)acetamides (2–15a–c) were designed and synthesized in order to evaluate their anticonvulsant activity.
Mohamed-Kamal Ibrahim, Ashraf A. Abd-Elrahman, Rezk R.A. Ayyad, Khaled El-Adl, Ahmed M. Mansour, Ibrahim H. Eissa   +5 more
doaj   +1 more source

Synthesizing polyethersulphone membranes with hybrid iron/nickel nanoparticles for dyes removal: An efficient biogenesis approach

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Industrial wastewater contamination by azo dyes poses a significant environmental challenge. This study reports the green synthesis of bimetallic iron/nickel (Fe/Ni) nanoparticles using moringa leaf extract, which acted as both a reducing and capping agent, and their incorporation into polyethersulphone (PES) membranes to produce eco‐friendly ...
Qusay A. Almajras, Ahmed K. Hassan, Dahiru Lawal, Mohammed Awad, Raed A. Al‐Juboori, Muhammad Irfan, Muhammad Rafiq, Qusay F. Alsalhy   +7 more
wiley   +1 more source

Thermische Umlagerung von Benzyl-1-alkinyl-äthern in Gegenwart von Aminen

CHIMIA, 1972
The benzyl-l-alkynyl ethers 1a and 1b in the presence of ammonia or diethylamine at 50 to 80° are transformed into the corresponding o-tolyl-acetamides 4 to 6 (scheme 1). This observation gives good evidence that benzyl-1-alkynyl ethers 1 rearrange by a
A. Wunderli, J. Zsindely, H.-J. Hansen, H. Schmid   +3 more
doaj   +1 more source