A hyperbranched polymer synthesizing method employs living radical polymerization of a monomer in the presence of a metal catalyst. The method includes forming a shell portion by introducing an acid-decomposable group to a core portion formed of a hyperbranched polymer synthesized by living radical polymerization; forming an acid group by partially decomposing the acid-decomposable group by an acid catalyst; precipitating a core-shell hyperbranched polymer contained in a first solution and having the acid group, by mixing the first solution with ultrapure water; and extracting, from a mixed solution into an organic solvent by liquid-liquid extraction, the core-shell hyperbranched polymer having the acid group, wherein the mixed solution contains a second solution containing the core-shell hyperbranched polymer precipitated at the precipitating and dissolved into the organic solvent, and the ultrapure water of an amount yielding a prescribed ratio of the ultrapure water relative to the organic solvent in the second solution.
In this paper, the copper(II)-catalyzed esterification reaction of arenecarboxylic acids with aryl- or vinyl-substituted trimethoxysilanes is described. A series of aryltrimethoxysilanes and arenecarboxylic acids worked well under this procedure, affording aryl benzoate derivatives in moderate to good yields. Notably, trimethoxy(vinyl)silanes also worked well under this procedure giving a facile and versatile method to access vinyl benzoate derivatives.
The regioselective hydro/deuterophosphonylation of electron-richalkenes with P(O)H compounds has been realized via a metal-free electrochemically induced strategy, accessing various Markovnikov-type adducts in high yields. A series of monodeuterated organophosphorus compounds with high deuterium (D) incorporation are subsequently obtained by adding D2O as the D source. The protocol features broad