Results 131 to 140 of about 128,089 (280)

6-(4-Amino-1-methyl-2-(methylthio)-6-oxo-1,6-dihydro-pyrimidin-5-yl)-3,6-dimethyl-2-(methylthio)-6,7-dihydro-3H-pyrrolo[2,3-d]pyrimidine-4,5-dione

Molbank, 2015
The title compound 6-(4-amino-1-methyl-2-(methylthio)-6-oxo-1,6-dihydro-pyrimidin-5-yl)-3,6-dimethyl-2-(methylthio)-6,7-dihydro-3H-pyrrolo[2,3-d]pyrimidine-4,5- dione was synthesized in 60% yield by a microwave-induced cyclocondensation reaction of ...
Pablo E. Romo, Jairo Quiroga, Braulio Insuasty, Manuel Nogueras, Justo Cobo   +4 more
doaj   +1 more source

Heterocyclic Chemistry [PDF]

, 1986
Specialist Periodical Reports provide systematic and detailed review coverage of progress in the major areas of chemical research. Written by experts in their specialist fields the series creates a unique service for the active research chemist, supplying regular critical in-depth accounts of progress in particular areas of chemistry. For over 80 years
openaire   +1 more source

Synthesis and Luminescence Modulation of Pyrazine-Based Gold(III) Pincer Complexes [PDF]

, 2015
The first examples of pyrazine-based gold(III) pincer complexes have been synthesized; their intense photoemissions can be modified by interactions with the non-coordinating pyrazine-N atom.
Au, Benoît Bertrand, Bronner, Cheng, Coles, Culham, Garth A. Jones, Julio Fernandez-Cestau, Kozhevnikov, Krylova, Lancaster, Lanë, Leitl, Manfred Bochmann, Maria Blaya, Marion, Roşca, Roşca, Roşca, Roşca, Savjani, Soscún Machado, Tang, Tao, Thomas J. Penfold, To, To, Walker, Walker, Wong, Wu, Yam, Yersin   +32 more
core   +1 more source

Engineering Trace‐Amount Electrolyte Additives for Aqueous Zinc Batteries

Advanced Energy Materials, EarlyView.
Large‐amount additives primarily modify the bulk electrolyte by coordinating with Zn2+ or reshaping the hydrogen‐bond network, thereby altering the overall solution chemistry. In contrast, trace‐amount additives mainly operate at the electrode–electrolyte interface, regulating Zn deposition through electric double‐layer modulation, interfacial ...
Zhaoxin Li, Jinhua Guo, Longjun Chang, Zhenyu Jiang, Shuchang Liu, Chao Wang, Qi Liu, Baohua Li, Zhiqiang Niu, Qing Li   +9 more
wiley   +1 more source

The Far Side of Carboranes: Anticancer Active Monocations and Ambiently Stable Dications

Angewandte Chemie, EarlyView.
This work describes the synthesis of bench‐stable dicationic carboranes. Their enhanced electrophilicity is documented by opening the clusters with weak nucleophiles or dihydrogen. The surprising stability of positively charged carboranes in water enabled a study of their in vitro antiproliferative activity, which surpassed the effects of doxorubicin ...
Vlastimil Němec, Josef Holub, Maksim A. Samsonov, Zdeňka Růžičková, Josef Cvačka, Ján Vančo, Zdeněk Trávníček, Jan Belza, Zdeněk Dvořák, Jan Vrána, Aleš Růžička   +10 more
wiley   +2 more sources

Nano ordered polyacrylonitrile-grafted chitosan as a robust biopolymeric catalyst for efficient synthesis of highly substituted pyrrole derivatives

Scientific Reports
A novel heterogeneous nanocatalyst was developed using chitosan, as a natural polysaccharide derived from crustacean shells, and its in-situ grafting by polyacrylonitrile to afford nano ordered polyacrylonitrile-modified chitosan (CS-g-PAN). The obtained
Mahsa Zohrehvand, Niloufar Nashibi, Mohammad G. Dekamin, Afshin Sarvary   +3 more
doaj   +1 more source

Sulfur Derivatives of 1,2,4-Triazole: Recently Developed Compounds, Structure Activity Relationship, and Biological Activity: Review article

Iraqi Journal of Pharmaceutical Sciences
The term of heterocyclic chemistry focuses only on heterocyclic compounds, which consider as a percentage of organic chemistry, they equal to greater than sixty-five.
Azhar Mahdi Jasim, Tagreed N-A Omar, Shayma L. Abdulhadi   +2 more
doaj   +1 more source

Predicting and Rationalizing Piezoelectricity in Racemic Bioorganic Molecular Crystals

Angewandte Chemie, EarlyView.
Racemic molecular crystals, composed of equal mixtures of chiral enantiomeric components, are predicted to exhibit significant piezoelectric responses and favourable mechanical flexibility. This study identifies organic and bioorganic racemates as promising candidates for sustainable, lead‐free materials, enabling next‐generation applications in energy
Shubham Vishnoi, Sarah Guerin
wiley   +2 more sources

Biocatalytic Synthesis of Isoxazolines Enabled by Cryptic Nitrile Oxide Formation by a Vanadium‐Dependent Chloroperoxidase

Angewandte Chemie, EarlyView.
The vanadium‐dependent haloperoxidase (VHPO) class of enzymes has been shown to catalyze cryptic nitrile oxide generation in an oxidative [3+2] cycloaddition reaction between aldoximes and alkenes to generate isoxazolines. This biotechnology has been applied to a chemoenzymatic sequence starting from aldehydes through in situ condensation with ...
Manik Sharma, Kyle F. Biegasiewicz
wiley   +2 more sources

Navigating Nitration Chemistry: A Practical Guide to Reagents, Mechanisms, and Selectivity

Angewandte Chemie, EarlyView.
This review highlights key contributions of modern nitration chemistry, emphasizing sustainable mechanistic platforms and comparing the performance of both organic and inorganic reagents across aromatic, ipso‐, olefin, alkyne, and heteroatom nitration. It provides the community with a clearer, unified perspective on current advances and facilitates the
Harry Lecomte, Anthony J. Fernandes, Dmitry Katayev   +2 more
wiley   +2 more sources