scholarly journals THE C4-SACCHARINIC ACIDS. II. THE PREPARATION AND RESOLUTION OF dl-1,3-DIHYDROXY-BUTYRIC ACID. SOME DERIVATIVES OF THE OPTICALLY-ACTIVE ACIDS.

1921 ◽  
Vol 43 (12) ◽  
pp. 2675-2682 ◽  
Author(s):  
J. W. E. Glattfeld ◽  
Frank V. Sander
Keyword(s):  
Butyric Acid ◽  
Optically Active ◽  
Derivatives Of

Novel optically active organometallic derivatives of fullerenes with non-central types of chirality in addends: synthetic and CD studies

2009 ◽  
Vol 50 (38) ◽  
pp. 5347-5350 ◽  
Author(s):  
Viatcheslav I. Sokolov ◽  
Vasily V. Bashilov ◽  
Fedor M. Dolgushin ◽  
Natalya V. Abramova ◽  
Kyrill K. Babievsky ◽  
...  
Keyword(s):  
Optically Active ◽  
Cd Studies ◽  
Derivatives Of

ChemInform Abstract: REACTIVITY OF ORGANOTIN COMPOUNDS. XII. SYNTHESIS OF OPTICALLY ACTIVE INDENYL L DERIVATIVES OF TIN

1978 ◽  
Vol 9 (27) ◽  
Author(s):  
A. N. KASHIN ◽  
V. A. KHUTORYANSKII ◽  
V. N. BAKUNIN ◽  
I. P. BELETSKAYA ◽  
O. A. REUTOV
Keyword(s):  
Optically Active ◽  
Organotin Compounds ◽  
Derivatives Of

ChemInform Abstract: STEREOCHEMICAL STUDIES OF ADRENERGIC DRUGS. OPTICALLY ACTIVE DERIVATIVES OF IMIDAZOLINES

1977 ◽  
Vol 8 (16) ◽  
pp. no-no
Author(s):  
D. D. MILLER ◽  
F. L. HSU ◽  
R. R. JUN. RUFFOLO ◽  
P. N. PATIL
Keyword(s):  
Optically Active ◽  
Adrenergic Drugs ◽  
Derivatives Of

Spectral properties of ionic derivatives of pyrene and their aggregates with anionic surfactant and polyelectrolyte

1995 ◽  
Vol 73 (11) ◽  
pp. 1948-1954 ◽  
Author(s):  
Pavol Hrdlovič ◽  
Lubica Horinová ◽  
Štefan Chmela
Keyword(s):  
Butyric Acid ◽  
Sodium Salt ◽  
Polyacrylic Acid ◽  
Sodium Dodecylsulfate ◽  
Green Emission ◽  
Water Soluble ◽  
Diffusion Controlled ◽  
Packed Structure ◽  
Bimolecular Quenching ◽  
Derivatives Of

A multifunctional probe based on pyrene, the chloride of the 2,2,6,6-tetramethyl-4-hydroxy-piperidinium ester of 4-(1-pyrene)butyric acid, at a concentration of 5 × 10−5 mol dm−3 exhibits excimer-like green emission with the maximum at 480 nm in the presence of sodium dodecylsulfate below its critical micelle concentration. A similar effect has been observed for this probe in the presence of the sodium salt of polyacrylic acid in the same concentration range. 1-Pyrenemethylammonium chloride exhibits a broad green excimer-like emission for sodium dodecylsulfate but not for the sodium salt of polyacrylic acid. The quenching constants of the monomeric and excimer-like emissions were determined for acrylamide, 1-oxo-2,2,6,6-tetramethyl-4-hydroxypiperidine, potassium iodide, and copper(II) sulfate, representing neutral, ionic, and free-radical types of quenchers. The rate constants of quenching for N-oxyl radicals indicate that the monomeric emission from both water-soluble probes is diffusion controlled. For other types of quenchers the rate constant of bimolecular quenching is lower. The quenching of the excimer-like emission of an aggregate of the chloride of the 2,2,6,6-tetramethyl-4-hydroxypiperidinium ester of 4-(1-pyrene)butyric acid is less efficient than in the case of 1-pyrenemethylammonium chloride, which indicates a more packed structure of the former aggregate. Keywords: pyrene, ionic derivative, emission, micelle, aggregation, quenching.

Synthesis and biological activity of polymeric derivatives of gamma-amino-butyric acid

1990 ◽  
Vol 24 (2) ◽  
pp. 114-117
Author(s):  
S. G. Chubinskaya ◽  
I. P. Fedorova ◽  
I. G. Veksler ◽  
A. G. Berdova ◽  
K. V. Yatsenko ◽  
...  
Keyword(s):  
Biological Activity ◽  
Butyric Acid ◽  
Gamma Amino Butyric Acid ◽  
Amino Butyric Acid ◽  
Derivatives Of
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