Total reactivity of pyridine and quinoline via the reactions of arylbenzoates with hydroxide ion. Apparent substituent constants for some N-heteroaromatic groups
A new set of apparent σ values was evaluated for the aza substitution of all positions in pyridyl and quinolyl groups on the basis of the alkaline hydrolysis of aryl benzoates. The enhanced reactivities of 4-pyridyloxy- and 4-quinolyloxy- groups were first estimated quantitatively.
Skraup, Monatshefte fur Chemie, 1882, vol. 3, p. 551
作者:Skraup
DOI:——
日期:——
New fluorescent probes for testing combinatorial catalysts with phosphodiesterase and esterase activities
作者:Francisco Caturla、Juan Enjo、M.Carmen Bernabeu、Stephanie Le Serre
DOI:10.1016/j.tet.2003.12.032
日期:2004.2
Combinatorial development of new catalysts with phosphodiesterase and esterase activities requires specific fluorescent probes for rapid visual detection of hydrolytic activity. Such fluorescent probes have been synthesized with special attention to solubility in water and stability towards spontaneous hydrolysis at a given pH. The probes reported here include compound 5 based on a fluorescein fluorophore, compound 12 for FRET-detection of phosphodiester hydrolysis and compound 25 based on a quinolinium fluorophore. (C) 2003 Elsevier Ltd. All rights reserved.
Chemical Reaction between Colliding Vesicles
作者:Fredric M. Menger、Kevin L. Caran、Victor A. Seredyuk
An organic reaction between two populations of vesicles, one containing a nucleophile (blue) and the other an electrophile (red), was examined kinetically. By comparing the rates with those of suitable controls, it was demonstrated that the electrophile is transferred during vesicle collisions, and a fast intra-vesicular reaction ensues.
Catalytic Hydrogenation of Pyridinols, Quinolinols and their Esters