Salvatore Failla

University of Catania

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P. Finocchiaro

Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud

Giuseppe Consiglio

University of Catania

Santo Di Bella

University of Catania

Ivan Pietro Oliveri

University of Catania

Salvatore Caccamese

University of Catania

Gaetano A. Tomaselli

University of Catania

P. Finocchiaro

University of Catania

Gerhard Hägele

Heinrich Heine University Düsseldorf

Francesco P. Ballistreri

University of Catania

S. B. Bulgarevich

Rostov State Transport University

Cooperative Institutions

University of Catania

123

Azienda Ospedaliero-Universitaria Policlinico - Vittorio Emanuele

Policlinico Universitario di Catania

Heinrich Heine University Düsseldorf

University of Messina

University of Bologna

University of Naples Federico II

University of Bari Aldo Moro

National Interuniversity Consortium of Materials Science and Technology

Ospedale Garibaldi

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Controlling the molecular aggregation. An amphiphilic Schiff-base zinc(II) complex as supramolecular fluorescent probe

Dalton Transactions (2009)

Giuseppe Consiglio Salvatore Failla Ivan Pietro Oliveri Roberto Purrello Santo Di Bella

A designed amphiphilic Schiff-base bis(salicylaldiminato)zinc(II) complex, 1, forms defined aggregates in dilute solutions of non-coordinating solvents. The switching to the monomer can be driven by addition of a coordinating species and involves a dramatic enhancement of the fluorescence emission.

10.1039/b914930a

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Citations (75)

1-Amino-1-Arylmethyl Phosphonic Acid Derivatives. Syntheses, Characterization and Complexing Properties

Phosphorus, sulfur, and silicon and the related elements (1996)

P. Finocchiaro Salvatore Failla

Abstract The System CF3I/Me3P is re-investigated and Me2PCF3, Me4P+γ, (CF3)2PMe3, Me3PI2, [Me3(CF3)P]+γ are found as products. Using CF3Br/P(NEt2)3 the phosphines R1 2PCF3 and R1P(CF3)2 (e.g. R1 = Me, iPr, NEt2) can be obtained which are precursors either for phosphoranes (e.g. 1,2λ5σ5-oxaphosphetanes) or phosphonium salts (e.g. [R1 2(Me)PCF3]+X− or [R1(Me)P(CF3)2X−]. The latter are deprotonated to furnish methylene phosphoranes R1 2(CH2=)PCF3 or R1(CH2=)P(CF3)2, reactive synthons. From CF3Br/P(NEt2)3/P(OPh)3 the phosphine P(CF3)3 is available, which turned out to be a potent electrophile. Amido phospites ROP(NEt2)2 and halides R2X (R2=CCl2CF3, X=Cl; R2=CF=CFCF3, X=F; R2=C6F5, X=Br, I; R2=C(CF3)3, X=Br; R2=SCF3, X=CF3) undergo an ARBUZOV reaction.

Synthon

Phosphonium

Methylene

10.1080/10426509608046230

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Citations (1)

Synthesis and characterization of conformationally flexible phosphonated cyclophanes

Mendeleev Communications (1999)

Giuseppe Consiglio Salvatore Failla P. Finocchiaro

Cyclophane

Phosphonate

Characterization

10.1070/mc1999v009n03abeh001109

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Citations (6)

SYNTHESIS AND NMR SPECTROSCOPIC STUDY OF NEW 5-METHYLFURYL-CONTAINING SCHIFF BASES AND RELATED BIS(AMINOPHOSPHONATES)

Phosphorus, sulfur, and silicon and the related elements (2004)

I. Kraicheva P. Finocchiaro Salvatore Failla

The synthesis of three novel 5-methylfuryl-containing Schiff bases: N,N′-bis(5-methylfurfurylidene)-4,4′-diaminodiphenylmethane, N,N′-bis(5-methylfurfurylidene)-1,4-phenylenediamine, and N,N′-bis(5methylfurfurylidene)benzidine and the corresponding bis(aminophosphonates) derived from them, 4,4′-bis{N-methyl(diethoxyphosphonyl)-1-[(5-methyl)-2-furyl]} diaminodiphenylmethane, 1,4-bis { N-methyl(diethoxyphosphonyl)-1-[(5-methyl)-2-furyl]} diaminobenzene, and bis{N-methyl(diethoxyphosphonyl)-1-[(5-methyl)-2-furyl]}- benzidine, is reported. The compounds have been characterized by elemental analysis, TLC, IR, and NMR ( 1 H, 13 C, and 31 P) spectra. For comparison, new 13 C and 31 P NMR data of three furyl-containing analogues of the above bis(aminophosphonates) are also regarded. The NMR studies of the two series of bis(aminophosphonates) reveal the presence of one diastereomer (meso or racemic form).

Benzidine

Diastereomer

Proton NMR

10.1080/10426500490485093

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Citations (7)

Supramolecular Aggregates of Defined Stereochemical Scaffolds: Aggregation/Deaggregation in Schiff-Base Zinc(II) Complexes Derived from Enantiopure trans-1,2-Diaminocyclohexane

Inorganic Chemistry (2016)

Giuseppe Consiglio Ivan Pietro Oliveri Salvatore Failla Santo Di Bella

This contribution explores, through detailed 1H NMR, DOSY NMR, optical absorption, and circular dichroism spectroscopic studies, the aggregation properties in solution of noncoordinating solvents of some new ZnII Schiff-base complexes, (R)-1, (S)-1, and (R)-2, derived from the chiral trans-1,2-diaminocyclohexane. It is found that chloroform solutions of 1 are characterized by the presence of three species, the predominance of which consists of large oligomeric aggregates. For chloroform solutions of 1, upon heating or standing, all species are irreversibly converted into a dimer, 1C, which is very stable and hardly disaggregable. Analysis of 1H NMR, UV/vis, and CD spectroscopic data and chemical evidence allow proposing a double helicate Zn2L2 structure with a tetrahedral coordination around the ZnII ions for 1C, as a consequence of the defined stereochemistry of the trans-1,2-diaminocyclohexane chelate bridge. This represents a different, uncommon aggregation mode in ZnII complexes of tetradentate Schiff-bases.

Enantiopure drug

Proton NMR

10.1021/acs.inorgchem.6b01580

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Citations (25)

Stereochemistry of Congested Cyclophanes Containing Chiral Spirobiindanol Phosphonates: Syntheses, X‐Ray Structure, HPLC Enantioresolution and Clathration Properties

European Journal of Organic Chemistry (1999)

Giuseppe Consiglio P. Finocchiaro Salvatore Failla Kenneth I. Hardcastle Candace Ross

Cyclophane

10.1002/(sici)1099-0690(199911)1999:11<2799::aid-ejoc2799>3.0.co;2-#

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Citations (15)

Dynamic stereochemistry of bis-β-diketonato-1,5-cyclooctadiene ruthenium(II) complexes

Inorganica Chimica Acta (1991)

Salvatore Failla P. Finocchiaro Mario Latronico Emanuela Libertini

Cyclooctadiene

Diastereomer

1,5-Cyclooctadiene

10.1016/s0020-1693(00)87941-4

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Citations (3)

ARYLIDENE BIS-(N-DIETHYL PHOSPHONOACETAMIDES). SYNTHESIS AND NMR CHARACTERIZATION

Phosphorus, sulfur, and silicon and the related elements (2000)

Giuseppe Consiglio Salvatore Failla P. Finocchiaro Laura Siracusa

Abstract Arylidene bis-(N-diethylphosphonoacetamides) have been prepered in good yield. All compounds are white crystalline powders soluble in low boiling point organic solvents. Characterization by 1H-NMR technique indicates that the methyne proton appears in the aromatic region of the spectrum and the two methylene diastereotopic protons (CH2P) give rise to complex ABX system due to the coupling with the phosphorus atom, thus this pattern is very diagnostic for this tipe of compounds. The heteronuclear coupling was also investigated by 1H31P-NMR spectroscopy.

Heteronuclear molecule

Methylene

ABX test

Characterization

Proton NMR

10.1080/10426500008046616

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Citations (0)

New Cleft-like Molecules and Macrocycles from Phosphonate Substituted Spirobisindanol

Molecules (2008)

Giuseppe Consiglio Salvatore Failla P. Finocchiaro

We have synthetized medium-sized cyclophanes and macrocycles containingphosphonic groups, directly linked to the aromatic rings of the phanes or as pendant arms,for use as specific receptors for the selective complexation of neutral guests or forcomplexing lanthanides, as luminescent sensors and for diagnostic bioassays in medicine.Furthermore, because it would be of great interest for biochemistry as well as forpharmacological studies to dispose of preorganized rigid chiral hosts for biorelevantmolecules we designed inter alia, some new chiral macrocycles capable of a triple bindingmode and we used them for constructing macrocycles that could also be of interest forchiral recognition and chiral separations. Thus, in this paper we shall review the salientaspects of some macrocycles synthetized in our laboratory, all possessing the phosphonatemoiety and a spirobisindanol scaffold and able to act as complexing agents for cations andorganic substrates. In particular, we shall describe their NMR characterization, theirstereochemistry in solution and in the solid state, and their use as chiral receptors forbiorelevant molecules. Chiral HPLC resolution of some of them is also reported.

Phosphonate

Calixarene

Molecular Recognition

Linker

10.3390/molecules13030678

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Citations (4)

ChemInform Abstract: Conformational Investigation of N‐Aralkylpyridinium Ions by Cotton‐ Mouton Effect Method.

ChemInform (1994)

S. B. Bulgarevich Dmitry Bren D. Y. MOVSHOVIC P. Finocchiaro Salvatore Failla

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

10.1002/chin.199416030

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Citations (0)