Transition metal nanoparticles stabilized by ammonium salts of hyperbranched polystyrene: effect of metals on catalysis of the biphasic hydrogenation of alkenes and arenes
作者:Lei Gao、Keisuke Kojima、Hideo Nagashima
DOI:10.1016/j.tet.2015.04.081
日期:2015.9
an excellent stabilizer of ruthenium, rhodium, iridium, palladium, and platinum nanoparticles from 1 to 3 nm in size uniformly dispersed in the polymer matrix. The catalytic performance of the resulting metal-polymer composites, [email protected]3+Cl−, is dependent on the metal. This dependence was investigated by assessing the hydrogenation of alkenes and arenes. The utility of [email protected]3+Cl−
Selective hydrogenation of arenes to cyclohexanes in water catalyzed by chitin-supported ruthenium nanoparticles
作者:Yuna Morioka、Aki Matsuoka、Kellie Binder、Benjamin R. Knappett、Andrew E. H. Wheatley、Hiroshi Naka
DOI:10.1039/c6cy00899b
日期:——
The selective hydrogenation of aromatic compounds to cyclohexanes was found to be promoted by chitin-supported rutheniumnanoparticles (Ru/chitin) under near-neutral, aqueous conditions without the loss of C–O/C–N linkages at benzylic positions.
The present invention features calcilytic compounds. “Calcilytic compounds” refer to compounds able to inhibit calcium receptor activity. Also described are the use of calcilytic compounds to inhibit calcium receptor activity and/or achieve a beneficial effect in a patient; and techniques which can be used to obtain additional calcilytic compounds.
The present invention features calcilytic compounds. “Calcilytic compounds” refer to compounds able to inhibit calcium receptor activity. Also described are the use of calcilytic compounds to inhibit calcium receptor activity and/or achieve a beneficial effect in a patient; and techniques which can be used to obtain additional calcilytic compounds.
A poly epoxy ester resin composition of the following chemical structure: where n is a number from 2 to about 3000; each m independently has a value of 0 or 1; each R
0
is independently —H or —CH
3
; each R
1
is independently —H or a C
1
to C
6
alkylene radical (saturated divalent aliphatic hydrocarbon radical), Ar is a divalent aryl group or heteroarylene group;_and X is cycloalkylene group, including substituted cycloalkylene group, where the substitute group include an alkyl, cycloalkyl, an aryl or an aralkyl group or other substitute group, for example, a halogen, a nitro, a blocked isocyanate, or an alkyloxy group; the combination of cycloalkylene and alkylene groups and the combination of alkylene and cycloalkylene group with a bridging moiety in between.