A Meso-Substituted Tripyrrin Metal Complex as the Candidate for Fluorescent Material

2012 ◽  
Vol 557-559 ◽  
pp. 665-668 ◽  
Author(s):  
Peng Peng Liu ◽  
Ya Qing Feng ◽  
Cheng Zhi Gu ◽  
Cheng Jie Li ◽  
Shu Xian Meng ◽  
...  
Keyword(s):  
Metal Complex ◽  
Fluorescent Property ◽  
Starting Material ◽  
Synthetic Chemistry ◽  
Synthetic Route ◽  
Compound A ◽  
Fluorescent Material ◽  
Fluorescent Materials ◽  
Strong Candidate

We herein report the synthesis of bis-(5,10-diphenyltripyrrin)nickel(II), which is the first meso-substituted tripyrrin metal complex. The use of tripyrrane as the starting material provides a new synthetic route to tripyrrins. The functionalization on the meso positions endows this type of compound a brighter perspective in synthetic chemistry. Meanwhile, the fluorescent property of the compound has been detected, indicating that this type of compound a strong candidate for fluorescent materials.

scholarly journals catena-Poly[[[bis(acetonitrile-κN)(4,4′-dimethoxy-2,2′-bipyridine-κ2 N,N′)copper(II)]-μ-trifluoromethanesulfonato-κ2 O:O′] trifluoromethanesulfonate]

IUCrData ◽  
2020 ◽  
Vol 5 (10) ◽  
Author(s):  
Rafael A. Adrian ◽  
Diego R. Hernandez ◽  
Hadi D. Arman
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Metal Organic Frameworks ◽  
Starting Material ◽  
Compound A ◽  
Distorted Octahedral ◽  
Weak Hydrogen Bonds ◽  
Polymeric Chains ◽  
Metal Organic ◽  
Bipyridine Ligand

The central copper(II) atom of the title salt, {[Cu(CF3SO3)(CH3CN)2(C12H12N2O2)](CF3SO3)} n or [[Cu(CH3CN)2(diOMe-bpy)(CF3SO3)](CF3SO3)] n where diOMe-bpy is 4,4′-dimethoxy-2,2′-bipyridine, C12H12N2O2, is sixfold coordinated by the N atoms of the chelating bipyridine ligand, the N atoms of two acetonitrile molecules, and two trifluoromethanesulfonate O atoms in a tetragonally distorted octahedral shape. The formation of polymeric chains [Cu(CH3CN)2(diOMe-bpy)(CF3SO3)]+ n leaves voids for the non-coordinating trifluoromethanesulfonate anions that interact with the complex through weak hydrogen bonds. The presence of weakly coordinating ligands like acetonitrile and trifluoromethanesulfonate makes the title compound a convenient starting material for the synthesis of novel metal–organic frameworks.

The Application of Environmental Protection Long-Lag Material in Printing Ink of Fluorescent Map

2011 ◽  
Vol 380 ◽  
pp. 89-94
Author(s):  
Kun Yang ◽  
Rui Zhi Shi ◽  
Ming Xiao Wang ◽  
Xiao Zhou
Keyword(s):  
Environmental Protection ◽  
Lag Time ◽  
Granule Size ◽  
Illumination Time ◽  
Fluorescent Material ◽  
Fluorescent Materials ◽  
Color Printing ◽  
Materials Used ◽  
Printing Ink ◽  
Spot Color

With the development of fluorescent technology, the application area of fluorescent material is expanding, which includes the fields of traffic, national defence, architecture, detection, decoration etc. In the field of printing, whether in the value of utility or view and admire, fluorescent adds tremendous energies. However, a majority of fluorescent materials used nowadays contain radioelement, which will do harm to human health. This paper considers the needs of fluorescent map printing, according to the defects of traditional fluorescent material such as low brightness, short duration time, strong radioactivity, limitation to spot color printing etc. It improves the capability of long fluorescent lag material and makes red, blue, green and yellow long fluorescent lag materials. Meanwhile, it tests the influence of ink thickness, illumination time and granule size etc. on irradiance capability. The thicker the ink is, the longer of the lag time will be. The bigger the granule size is, the lag time will be. It also tests its radioactivity extent, which is in the safety range and reaches the standard of environmental protection. According to the special requirement of map printing, this paper brings forward the technique scheme of the application of long fluorescent lag ink in map printing,which realizes the color fluorescent map printing.

BEHAVIOUR AND NATURE OF THE FLUORESCING SUBSTANCES IN DRIED EGG POWDERS

1943 ◽  
Vol 21d (4) ◽  
pp. 98-107 ◽  
Author(s):  
J. A. Pearce
Keyword(s):  
Protein Fraction ◽  
Indirect Evidence ◽  
Fluorescent Material ◽  
Fluorescent Materials ◽  
Preliminary Study ◽  
Micro Organisms

Fluorescence increased during storage in defatted, dried egg powders, and also in separately dried yolk and white. A portion of the fluorescent material was soluble in fat solvents and especially in alcohols. Ethanol may also destroy some of the fluorescing substance. The results indicate that fluorescent materials arise from changes in the protein fraction, that there is more than one fluorescing substance, and that some of these materials contribute to the increased fluorescence associated with decrease in quality. Indirect evidence indicates that proteose and peptone constituents are partly responsible for fluorescence, and that the nature of the deterioration is hydrolytic. A preliminary study was made of the effect of certain enzymes and micro-organisms on the formation of fluorescent materials. The work is being continued.

The Synthesis, Condensation, and Luminescence of Stilbenoid Oligomers with Alkoxysilane End Groups

2001 ◽  
Vol 665 ◽  
Author(s):  
H. Detert ◽  
E. Sugiono
Keyword(s):  
Small Molecules ◽  
Organic Semiconductors ◽  
Three Dimensional ◽  
Synthetic Route ◽  
Heck Reactions ◽  
Transparent Films ◽  
Cross Metathesis ◽  
Fluorescent Materials ◽  
End Groups ◽  
Hydrolysis Of

ABSTRACTA synthetic route to highly luminescent organic semiconductors with curable alkoxysilyl groups is described. Monodisperse oligo(phenylenevinylene)s are rigidly connected to di- and triethoxysilanes via Heck reactions or via cross-metathesis. Hydrolysis of the silicic esters yields silanols condensing to linear and cyclic oligo-OPV-siloxanes or to three-dimensional networks, thus allowing the transformation of small molecules to fluorescent materials with well-defined chromophores. Transparent films are obtained by casting of soluble cyclosiloxanes and from OPV-silanetriols, the latter can be cured to insoluble networks.

The chemistry of thujone. XVI. Versatile and efficient routes to safronitrile, β-cyclogeranonitrile, β-cyclocitral, damascones, and their analogues

1992 ◽  
Vol 70 (7) ◽  
pp. 2094-2114 ◽  
Author(s):  
James P. Kutney ◽  
Philip J. Gunning ◽  
Robin G. Clewley ◽  
John Somerville ◽  
Steven J. Rettig
Keyword(s):  
Starting Material ◽  
Forest Industry ◽  
Synthetic Route ◽  
Rose Oil ◽  
Efficient Route ◽  
Synthetic Sequence

Thujone, a waste by-product of the Canadian forest industry, has been utilized as a starting material to develop a versatile synthetic route to the damascones (rose oil ketones) and related analogues. The synthetic sequence provides a route to β-cyclocitral (45), the latter having been previously converted to β-damascone (2). In addition, thujone-derived intermediates are converted to β-damascenone (48) and to intermediates that can be utilized for the preparation of damascone analogues. In conjunction with the above, an efficient route to safronitrile (42), β-cyclogeranonitrile (43), and β-cyclocitral (45) from 2,6-dimethylcyclohexanone has been developed. In summary, these studies afford an attractive versatile route to these important perfumery materials.

scholarly journals Diastereoselective Synthesis of (–)-Bestatin, Epibestatin, Phebestin and (3S,4R)-4-Amino-3-hydroxy-5-phenylpentanoic Acid from an Aldehyde Derived from d-Phenylalanine

SynOpen ◽  
2019 ◽  
Vol 03 (04) ◽  
pp. 114-123
Author(s):  
Vipin Kumar Jain
Keyword(s):  
Amino Acid ◽  
Efficient Method ◽  
Good Yield ◽  
Starting Material ◽  
Hydroxyl Group ◽  
Diastereoselective Synthesis ◽  
Synthetic Route ◽  
Protected Amino Acid ◽  
Very High ◽  
General Method

A convenient and efficient method for the synthesis of (–)-bestatin, epibestatin, phebestin, and (3S,4R)-4-amino-3-hydroxy-5-phenylpentanoic acid is reported. The key step is a proline-catalyzed α-hydroxylation of an aldehyde derived from d-phenylalanine, which leads to incorporation of a hydroxyl group at the α-position of that aldehyde with good yield and very high diastereoselectivity. Bestatin and its dia­stereomer epibestatin are synthesized from the same starting material using the same sequence of reactions, except for proline as the catalyst. An O-MOM and Boc-protected amino acid, a common intermediate for bestatin, was coupled with a dipeptide, H-Val-Phe-OMe followed by global deprotection to yield phebestin. (3S,4R)-4-Amino-3-hydroxy-5-phenylpentanoic acid was also synthesized in eight steps from the same starting material. The reported synthetic route offers a general method for the synthesis of such types of compounds and their analogues by changing the proline catalyst and/or the starting material from d- to l-phenylalanine.

Preparation and Characterization of Novel Methyl Acrylate

2011 ◽  
Vol 343-344 ◽  
pp. 1236-1241
Author(s):  
Yong En Guo ◽  
Jing Cao ◽  
Cai Ju Zhou ◽  
Shao Peng Wen ◽  
Ya Mei Zhang ◽  
...  
Keyword(s):  
1H Nmr ◽  
Methyl Acrylate ◽  
Salvianolic Acid B ◽  
Starting Material ◽  
Synthetic Route ◽  
Target Compound ◽  
Pharmacological Activities ◽  
Salvianolic Acid ◽  
Important Intermediate

Salvianolic acid B has many important pharmacological activities. A novel synthetic route of methyl acrylate derivative—an important intermediate to synthesize salvianolic acid B, was designed, and the target compound was prepared in seven steps of reactions with 2-bromo-3-hydroxy-4-methoxybenzaldehyde as major starting material. Its and other four important unreported intermediates’ structures were characterized by IR, 1H NMR, MS, etc.

Efficient synthesis of 4-amino-2,6-dichloropyridine and its derivatives

2016 ◽  
Vol 22 (5) ◽  
Author(s):  
Congming Ma ◽  
Zuliang Liu ◽  
Qizheng Yao
Keyword(s):  
Starting Material ◽  
Synthetic Route ◽  
Efficient Synthesis ◽  
Important Intermediate

AbstractA facile synthetic route to an important intermediate 4-amino-2,6-dichloropyridine was developed. Oxidation of 2,6-dichloropyridine as a starting material gave pyridine

Strategic Synthesis of Asymmetrically Substituted C4N4 Fluorophores

Synthesis ◽  
2021 ◽  
Author(s):  
Wei Xu ◽  
Miki Kohei ◽  
Masakatsu Shibasaki ◽  
Naoya Kumagai
Keyword(s):  
Organic Molecules ◽  
Cross Coupling ◽  
Fluorescent Property ◽  
Phenolic Hydroxyl ◽  
Hydroxyl Group ◽  
New Class ◽  
Fluorescent Materials

C4N4 fluorophores comprise a recently disclosed new class of emissive organic molecules with modular synthetic capabilities. Herein we report a new synthetic protocol for asymmetrically diarylated C4N4 fluorescent materials. Direct monoarylation of 1-naphthol was exploited to suppress undesired diarylation and provide a free phenolic hydroxyl group for prospective linking to a molecule of interest. Installation of the second aromatic to acquire the fluorescent property was achieved by Suzuki-Miyaura cross-coupling.

The Efficient Synthesis of 2-(3-Carbamoylpyridine-2-yl) nicotinamide Pyridine Salts

2021 ◽  
Vol 18 ◽  
Author(s):  
Lei-Yang Zhang ◽  
Jing-Bo Geng ◽  
Nai-Xing Wang ◽  
Yue-Hua Wu ◽  
Zhan Yan ◽  
...  
Keyword(s):  
Starting Material ◽  
Synthetic Route ◽  
Efficient Synthesis ◽  
Chiral Compound ◽  
Axial Chirality ◽  
Simple Operation ◽  
Chiral Compounds ◽  
Axially Chiral

: The synthesis of axially chiral compounds has attracted a great deal of attention in the recent years. Herein, an efficient and economical synthetic route has been developed for 2-(3-carbamoylpyridin-2-yl) nicotinamide pyridine salts, an axially chiral compound. The starting material 1,10-phenanthroline has been readily available and 2-(3-carbamoylpyridin-2-yl) nicotinamide pyridine salts have been obtained in moderate to good yields. This protocol features simple operation and easy scalability. In addition, the axial chirality of the products has also been preliminary studied.

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