Anhydrides of phosphorus and sulfur acids, 2. Mixed anhydrides of phosphoric, phosphonic, and phosphinic acids with sulfonic acids and sulfuric Monoimidazolide. New methods of synthesis, novel structures, phosphorylating properties

1985 ◽  
Vol 118 (5) ◽  
pp. 1809-1824 ◽  
Author(s):  
Wojciech Dabkowski ◽  
Jan Michalski ◽  
Zbigniew Skrzypczynski
Keyword(s):  
Sulfonic Acids ◽  
New Methods ◽  
Mixed Anhydrides ◽  
Methods Of Synthesis ◽  
Phosphinic Acids ◽  
Novel Structures

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.

Rapid and mild sulfonylation of aromatic compounds with sulfonic acids via mixed anhydrides using Tf2O

2007 ◽  
Vol 48 (38) ◽  
pp. 6805-6808 ◽  
Author(s):  
Abdolhamid Alizadeh ◽  
Mohammd Mehdi Khodaei ◽  
Ehsan Nazari
Keyword(s):  
Aromatic Compounds ◽  
Sulfonic Acids ◽  
Mixed Anhydrides

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
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