Room-Temperature Phosphorescence of Amorphous Metal Complexes of Aliphatic Carboxylic Acids with Basic Amino Acids

1995 ◽  
Vol 7 (2) ◽  
pp. 385-390
Author(s):  
Richard S. Turk ◽  
Joel I. Dulebohn ◽  
DeLynne Vail
Keyword(s):  
Amino Acids ◽  
Metal Complexes ◽  
Carboxylic Acids ◽  
Room Temperature ◽  
Amorphous Metal ◽  
Room Temperature Phosphorescence ◽  
Basic Amino Acids ◽  
Aliphatic Carboxylic Acids

Room-temperature phosphorescent γ-cyclodextrin-cucurbit[6]uril-cowheeled [4]rotaxanes for specific sensing of tryptophan

2019 ◽  
Vol 55 (21) ◽  
pp. 3156-3159 ◽  
Author(s):  
Xingke Yu ◽  
Wenting Liang ◽  
Qinfei Huang ◽  
Wanhua Wu ◽  
Jason J. Chruma ◽  
...  
Keyword(s):  
Amino Acids ◽  
Room Temperature ◽  
Plasma Amino Acids ◽  
Room Temperature Phosphorescence

The room temperature phosphorescence of iodine-substituted-γ-CD-CB[6]-cowheeled[4] rotaxanes was quenched specifically by tryptophan among plasma amino acids.

scholarly journals Structural factors influencing the reaction rates of 4-aryloxy-7-nitrobenzofurazans with amino acids

2004 ◽  
Vol 2 (4) ◽  
pp. 672-685 ◽  
Author(s):  
Marioara Bem ◽  
Marilena Vasilescu ◽  
Miron Caproiu ◽  
Constantin Draghici ◽  
Adrian Beteringhe ◽  
...  
Keyword(s):  
Amino Acids ◽  
Room Temperature ◽  
Reaction Rates ◽  
Structural Factors ◽  
Basic Amino Acids ◽  
Interesting Observation ◽  
Neutral Amino Acids ◽  
Acidic Amino Acids ◽  
Factors Influencing ◽  
Snar Reaction

AbstractAn interesting observation was made when studying the SNAr reaction between several 4-aryloxy-7-nitrobenzofurazans (2) and several amino acids leading to the apparition of detectable fluorescence from the substitution products3. Acidic amino acids reacted very slowly=while basic amino acids react fastest with2 having an unsubstituted phenyl or a 4-formyl-phenyl Ar group. Amongst neutral amino acids, proline reacts fastest at room temperature after 100 min. With2 having a methoxy-subtituted Ar group.

Intercalation of basic amino acids into layered zirconium proline-N-methylphosphonate phosphate

2011 ◽  
Vol 65 (5) ◽  
Author(s):  
Ren-Quan Zeng ◽  
Xiang-Kai Fu ◽  
Xin-Bin Yang
Keyword(s):  
Amino Acids ◽  
Inductively Coupled Plasma ◽  
Room Temperature ◽  
Plasma Analysis ◽  
X Ray ◽  
Basic Amino Acids ◽  
Inductively Coupled ◽  
Ft Ir ◽  
Xrd Patterns ◽  
Ir And Raman

AbstractIntercalation of basic amino acids into layered zirconium proline-N-methylphosphonate phosphate (α-ZPMP) was investigated at room temperature. Three kinds of host-guest compounds were prepared and characterised by elemental analysis, inductively coupled plasma analysis (ICP), Fourier transform infrared spectrum (FT-IR), Raman spectrum, X-ray powder diffraction (XRD) and thermoanalysis. The interaction of amino acid guests with P-OH of α-ZPMP host was documented by FT-IR and Raman spectra. In addition, the XRD patterns indicated that l-arginine or l-lysine were intercalated into the interlayer galleries of α-ZPMP host; the interlayer distances of the Larginine and l-lysine intercalation compounds were expanded from 1.520 nm to 2.218 nm and 2.207 nm, respectively. l-arginine and l-lysine would be arranged as a mono-molecule layer in different orientations. The interlayer distance of l-histidine (d = 1.522 nm) was similar to that of α-ZPMP host (d = 1.520 nm), l-histidine might be adsorbed on the outer surface of the α-ZPMP host. Thermoanalysis showed that the intercalated l-arginine and l-lysine were removed at 110–305°C or 150–250°C, respectively, the adsorbed l-histidine was released at a temperature of up to 320°C.

Metal-Free Regioselective Alkylation of Imidazo[1,2-a]pyridines with N-Hydroxyphthalimide Esters under Organic Photoredox Catalysis

Synlett ◽  
2020 ◽  
Vol 31 (04) ◽  
pp. 363-368 ◽  
Author(s):  
Can Jin ◽  
Bin Sun ◽  
Tengwei Xu ◽  
Liang Zhang ◽  
Rui Zhu ◽  
...  
Keyword(s):  
Visible Light ◽  
Carboxylic Acids ◽  
Room Temperature ◽  
Eosin Y ◽  
Photoredox Catalysis ◽  
Mechanistic Studies ◽  
Metal Free ◽  
Regioselective Alkylation ◽  
Decarboxylative Coupling ◽  
Aliphatic Carboxylic Acids

A visible-light-induced direct C–H alkylation of imidazo[1,2-a]pyridines has been developed. It proceeds at room temperature by employing inexpensive Eosin Y as a photocatalyst and alkyl N-hydroxyphthalimide (NHP) esters as alkylation reagents. A variety of NHP esters derived from aliphatic carboxylic acids (primary, secondary, and tertiary) were tolerated in this protocol, giving the corresponding C-5-alkylated products in moderate to excellent yields. Mechanistic studies indicate that a radical decarboxylative coupling pathway was involved in this process.

Four-Component Reaction of Isocyanides, Acetylenic Esters, and Carboxylic Acids for the Synthesis of Functionalised 2,5-diaminofurans

2009 ◽  
Vol 2009 (5) ◽  
pp. 271-273 ◽  
Author(s):  
Mohammad Anary-Abbasinejad ◽  
Maryam Rasekh ◽  
Hossein Anaraki-Ardakani
Keyword(s):  
Carboxylic Acids ◽  
Room Temperature ◽  
Acetylenic Esters ◽  
Dialkyl Acetylenedicarboxylates ◽  
Aliphatic Carboxylic Acids

An improved four-component reaction of isocyanides is described. The reaction between two equivalents of an isocyanide, dialkyl acetylenedicarboxylates and aliphatic carboxylic acids at room temperature leads to 2,5-diaminofuran derivatives in good yields.

Sign in / Sign up

Export Citation Format

Share Document