ChemInform Abstract: Metal Carbonyls: New Methods of Synthesis and Investigations

ChemInform ◽  
1990 ◽  
Vol 21 (24) ◽  
Author(s):  
G. K.-I. MAGOMEDOV
Keyword(s):  
Metal Carbonyls ◽  
New Methods ◽  
Methods Of Synthesis

scholarly journals AROMI NATURALI: LEGISLAZIONE E SINTESI

2020 ◽  
Author(s):  
Stefano Serra
Keyword(s):  
Legal Regulations ◽  
New Methods ◽  
Methods Of Synthesis ◽  
Natural Flavors

This report describes the legal regulations concerning flavour production, classification and marketing. The effect that the legislation itself has brought in the development of new methods of synthesis of natural flavors is described in detail.

New Methods of Synthesis, Structure and Aminomethylation of 4-Imino-2-(dicyanomethylene)-3-azaspiro[5.5]undecane-1,5-dicarbonitrile

2021 ◽  
Vol 91 (6) ◽  
pp. 971-984
Author(s):  
A. O. Kurskova ◽  
V. V. Dotsenko ◽  
K. A. Frolov ◽  
N. A. Aksenov ◽  
I. V. Aksenova ◽  
...  
Keyword(s):  
New Methods ◽  
Methods Of Synthesis

scholarly journals The hetero-Friedel-Crafts-Bradsher Cyclizations with Formation of Ring Carbon-Heteroatom (P, S) Bonds, Leading to Organic Functional Materials

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4751
Author(s):  
Joanna Skalik ◽  
Marek Koprowski ◽  
Ewa Różycka-Sokołowska ◽  
Piotr Bałczewski
Keyword(s):  
Flame Retardants ◽  
Bond Formation ◽  
Functional Materials ◽  
Semiconducting Materials ◽  
Conjugated Molecules ◽  
Comprehensive Review ◽  
Ring Carbon ◽  
New Methods ◽  
Cyclic Molecules ◽  
Methods Of Synthesis

The interest in functional materials possessing improved properties led to development of new methods of their synthesis, which allowed to obtain new molecular arrangements with carbon and heteroatom motifs. Two of the classical reactions of versatile use are the Friedel-Crafts and the Bradsher reactions, which in the new heteroatomic versions allow to replace ring carbon atoms by heteroatoms. In the present work, we review methods of synthesis of C–S and C–P bonds utilizing thia- and phospha-Friedel-Crafts-Bradsher cyclizations. Single examples of C–As and lack of C–Se bond formation, involving two of the closest neighbors of P and S in the periodic table, have also been noted. Applications of the obtained π-conjugated molecules, mainly as semiconducting materials, flame retardants, and resins hardeners, designed on the basis of five- and six-membered cyclic molecules containing ring phosphorus and sulfur atoms, are also included. This comprehensive review covers literature up to August 2020.

ChemInform Abstract: Two New Methods of Synthesis for the Perbromate Ion: Chemistry and Determination by LC-MS/MS.

ChemInform ◽  
2011 ◽  
Vol 42 (47) ◽  
pp. no-no
Author(s):  
Aleksey N. Pisarenko ◽  
Robert Young ◽  
Oscar Quinones ◽  
Brett J. Vanderford ◽  
Douglas B. Mawhinney
Keyword(s):  
Ion Chemistry ◽  
New Methods ◽  
Methods Of Synthesis

scholarly journals Phyto-Nanocatalysts: Green Synthesis, Characterization, and Applications

Molecules ◽  
2019 ◽  
Vol 24 (19) ◽  
pp. 3418 ◽  
Author(s):  
Fierascu ◽  
Ortan ◽  
Avramescu ◽  
Fierascu
Keyword(s):  
Chemical Composition ◽  
Plant Extracts ◽  
Metallic Nanoparticles ◽  
Chemical Processes ◽  
Metallic Oxides ◽  
New Methods ◽  
Methods Of Synthesis ◽  
Promising Area ◽  
Shape Of Nanoparticles ◽  
Almost All

Catalysis represents the cornerstone of chemistry, since catalytic processes are ubiquitous in almost all chemical processes developed for obtaining consumer goods. Nanocatalysis represents nowadays an innovative approach to obtain better properties for the catalysts: stable activity, good selectivity, easy to recover, and the possibility to be reused. Over the last few years, for the obtaining of new catalysts, classical methods—based on potential hazardous reagents—have been replaced with new methods emerged by replacing those reagents with plant extracts obtained in different conditions. Due to being diversified in morphology and chemical composition, these materials have different properties and applications, representing a promising area of research. In this context, the present review focuses on the metallic nanocatalysts’ importance, different methods of synthesis with emphasis to the natural compounds used as support, characterization techniques, parameters involved in tailoring the composition, size and shape of nanoparticles and applications in catalysis. This review presents some examples of green nanocatalysts, grouped considering their nature (mono- and bi-metallic nanoparticles, metallic oxides, sulfides, chlorides, and other complex catalysts).

New methods of synthesis of σ-ethynylmetal carbonyl derivatives

1979 ◽  
Vol 166 (2) ◽  
pp. 217-222 ◽  
Author(s):  
A.N. Nesmeyanov ◽  
L.G. Makarova ◽  
V.N. Vinogradova ◽  
V.N. Korneva ◽  
N.A. Ustynyuk
Keyword(s):  
New Methods ◽  
Carbonyl Derivatives ◽  
Methods Of Synthesis
Sign in / Sign up

Export Citation Format

Share Document