METHODS FOR CONTROLLING SURFACE FUNCTIONALITY OF METAL OXIDE NANOPARTICLES, METAL OXIDE NANOPARTICLES HAVING CONTROLLED FUNCTIONALITY, AND USES THEREOF
Cu-Catalyzed Stereoselective γ-Alkylation of Enones
作者:Xiaohong Chen、Xiaoguang Liu、Justin T. Mohr
DOI:10.1021/jacs.6b02565
日期:2016.5.25
This method constitutes a novel approach to the challenging 1,6-dioxygenation motif. A range of γ-substituted enones, including many bearing all-carbon quaternary centers, are available through a simple protocol under mild reaction conditions with superb functional group compatibility. Excellent stereoinduction is observed providing controlled access to challenging stereochemical arrays.
A method of preparing a non-gelled branched vinyl polymer scaffold carrying dendrons, comprising the living or controlled polymerization of a monofunctional vinyl monomer and a difunctional vinyl monomer, using a dendron initiator and at least one further initiator.
Formation of quaternary carbons through cobalt-catalyzed C(sp<sup>3</sup>)–C(sp<sup>3</sup>) Negishi cross-coupling
作者:Eduardo Palao、Enol López、Iván Torres-Moya、Antonio de la Hoz、Ángel Díaz-Ortiz、Jesús Alcázar
DOI:10.1039/d0cc02734k
日期:——
quaternary carbons is a key challenge in organic and medicinal chemistry. We report a cobalt-catalyzed C(sp3)–C(sp3) cross-coupling that allows for the introduction of benzyl, heteroarylmethylzinc and allyl groups to halo-carbonyl substrates. The cross-coupling reaction is selective for C(sp3)-over C(sp2)-halides, in contrast to most used catalytic metals, and allows access to novel scaffolds of pharmaceutical
The present invention relates to a branched amphiphilic polymer, suitable for stabilizing an emulsion, comprising a plurality of polymer chains comprising hydrophobic chain ends; a plurality of polymer chains comprising functional chain ends capable of associating to a biological substrate; and a plurality of branching units. The present invention also relates to pharmaceutical compositions containing said branched amphiphilic polymers, their methods of use, and methods for their preparation.