A mixture of 5- and 6-carboxyfluorescein was activated with 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride in the presence of either N-hydroxysuccinimide or pentafluorophenol to give the corresponding succinimidyl and pentafluorophenyl esters. The regioisomeric mixtures were separated to give the 5- and 6-succinimidyl and pentafluorophenyl
Chemical communications (Cambridge, England), (29)(29), 3384-3386 (2008-07-18)
The rational design of a ligand containing two electron-poor pi-rings, i.e. a triazine and a pentafluorophenoxy groups, has allowed the preparation of a copper complex where both the anticipated anion...pi interactions are present.
Dalton transactions (Cambridge, England : 2003), (27)(27), 2851-2858 (2007-07-04)
Recent advances in the chemistry of pentafluorophenyl copper are discussed, including the observation of strongly luminescent adducts with pyridine, the first successful structural characterization of an organocopper-arene complex, and the complexation with electron-rich transition metal complexes such as ferrocene derivatives.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 877(27), 3175-3180 (2009-09-05)
Juvenile hormone (JH) III is responsible for control of a variety of insect physiological and developmental states, including caste differentiation of the Formosan subterranean termite (Coptotermes formosanus Shiraki). We report here a simplified, efficient sample preparation and an optimized LC-ESI-MS
For selective C-terminal derivatization of peptides and proteins, we have devised a method for activating the C-terminal carboxyl group by extending the oxazolone chemistry. A mixture of formic acid and acetic anhydride was found to be effective for the formation
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