62529-18-4Relevant academic research and scientific papers
Direct asymmetric aldol reaction co-catalyzed by amphiphilic prolinamide phenol and lewis acidic metal on water
Zhang, Tao,Zhang, Yunxiao,Li, Zaichun,Song, Zhongtai,Liu, Hao,Tao, Jingchao
, p. 247 - 255 (2013/08/24)
An approach based on combinations of various water compatible Lewis acids and lipophilic group containing amphiphilic prolinamide co-catalysts has been evaluated for the direct asymmetric Aldol reaction. From the broad screening of chloride salts from alk
Novel fluorescent quater- and quinquifurans: Syntheses and photophysical properties
Kauffman, Joel M.,Moyna, Guillermo
, p. 981 - 988 (2007/10/03)
In the quest for fast fluors for use in waveshifting polystyrene fibers, symmetrical oligofurans were investigated. Furan moieties were coupled by means of the Ullmann Reaction or by palladium-catalyzed unsymmetrical coupling; the latter gave higher yields. While the benzoxazole-terminated quater- and quinquifurans we prepared were both stable and fast, exhibiting a green fluorescence and decay times of about 2.4 nsec, they were inferior to other types of fluors in solubility and emission intensity when incorporated into polystyrene.
Alkyl-substituted 2,2'-(1,4-naphthalenediyl)dibenzoxazole and photographic support comprising the same
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, (2008/06/13)
An alkyl-substituted 2,2'-(1,4-naphthalenediyl)dibenzoxazole represented by the structural formula [I]: STR1 wherein R1 and R2 are independently alkyl groups having 9-20 carbon atoms, m and n are independently 0 or positive integers and m+n=1-4, and a photographic support comprising the alkyl-substituted 2,2'-(1,4-naphthalenediyl)dibenzoxazole as a fluorescent agent. The photographic support comprising the same has bright whiteness and does not cause color change or bleeding out.
Sulfonamidophenols, metal complexes thereof, and solutions containing such compounds for use in extraction of metal values
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, (2008/06/13)
Certain sulfonamidophenols, metal complexes thereof and solutions of said compounds in essentially water-immiscible, liquid hydrocarbon solvents are disclosed. The sulfonamidophenols have the structural formula: STR1 wherein R1, R2, R3 and R4 are as defined in the specification and claims hereof. Particular metal values are recovered from their aqueous solutions by using sulfonamidophenols dissolved in essentially water-immiscible liquid hydrocarbon solvents. The extraction process involves contacting the metal value containing aqueous solution with the solution of sulfonamidophenol in essentially water-immiscible liquid hydrocarbon solvent and stripping the metal values from the loaded organic phase.
Certain benzoxazoles and the use thereof as metal extractants
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, (2008/06/13)
Benzoxazoles having the structure STR1 where R is hydrogen or an alkyl group having from 1 to 20 carbon atoms, R' is hydrogen, chlorine or an alkyl group containing from 1 to 20 carbon atoms, X is H or Chlorine and the total number of carbon atoms in R an
