5574-97-0Relevant articles and documents
Palladium-catalyzed heck reaction of aryl chlorides under mild conditions promoted by organic ionic bases
Xu, Hua-Jian,Zhao, Yong-Qiang,Zhou, Xin-Feng
experimental part, p. 8036 - 8041 (2011/12/02)
An efficient Pd-catalyzed Heck reaction of aryl chlorides with olefins under mild conditions is described. High yields of products were achieved with n-Bu4N+OAc- as base. Significantly, the temperature of the Heck reaction of diverse nonactivated aryl chlorides can be lowered to 80 °C. The new reaction system can also tolerate a wider range of olefins.
Effect of spacer geometry on oxoanion binding by bis- and tetrakis-thiourea hosts
Leung, Annie N.,Degenhardt, Dave A.,Bühlmann, Philippe
, p. 2530 - 2536 (2008/09/18)
Hosts with thiourea groups bind anions by formation of multiple hydrogen bonds. This contribution discusses how spacers linking two or four thiourea groups affect the host affinity and selectivity. While most of the bis-thioureas bind H2PO4- preferentially, the extent of selectivity over chloride, acetate, and H2AsO4- is determined by the size of the binding cavity. A tetrakis-thiourea is shown to exhibit a unique H2AsO4- selectivity, and the discrimination of chloride is enhanced by specific solvation in dimethyl sulfoxide.
A novel phosphate chemosensor utilizing anion-induced fluorescence change
Liao, Jen-Hai,Chen, Chao-Tsen,Fang, Jim-Min
, p. 561 - 564 (2007/10/03)
(figure presented) The neutral receptor N,N′-bis{3,5-di[(1-pyrenylmethyl)carbamoyl]benzyl} pyridine-2,6-dicarbamide (2) provides a pseudo-tetrahedron cleft and multiple hydrogen bondings to form a 1:1 complex with phosphate ion in a highly selective manne
