Synthesis of α-Aryl Esters and Nitriles: Deaminative Coupling of α-Aminoesters and α-Aminoacetonitriles with Arylboronic Acids
作者:Guojiao Wu、Yifan Deng、Chaoqiang Wu、Yan Zhang、Jianbo Wang
DOI:10.1002/anie.201406765
日期:2014.9.22
Transition‐metal‐free synthesis of α‐arylesters and nitriles using arylboronicacids with α‐aminoesters and α‐aminoacetonitriles, respectively, as the starting materials has been developed. The reaction represents a rare case of converting C(sp3)N bonds into C(sp3)C(sp2) bonds. The reaction conditions are mild, demonstrate good functional‐group tolerance, and can be scaled up.
Asymmetric Aminations and Kinetic Resolution of Acyclic
<scp>α‐Branched</scp>
Ynones
作者:Faqian He、Guosong Shen、Xiaoyu Yang
DOI:10.1002/cjoc.202100514
日期:2022.1
An efficient method for asymmetric synthesis of acyclic α-tertiary amine derivatives has been achieved through enantioselective aminations of α-branched ynones with azodicarboxylates enabled by chiral phosphoric acid catalysis. Moreover, kinetic resolution of racemic starting material was realized under these conditions, which gave access to valuable enantioenriched α-substituted ketones. A wide array
QUANTUM DOT-CONTAINING MATERIAL, METHOD OF PREPARING QUANTUM DOT-CONTAINING MATERIAL, CROSS-LINKED MATERIAL OF QUANTUM DOT-CONTAINING MATERIAL, METHOD OF PREPARING CROSS-LINKED MATERIAL, AND LIGHT-EMITTING DEVICE INCLUDING CROSS-LINKED MATERIAL
申请人:Samsung Display Co., Ltd.
公开号:US20220213379A1
公开(公告)日:2022-07-07
Disclosed are a quantum dot-containing material, a method of preparing the quantum dot-containing material, a cross-linked material of the quantum dot-containing material, and a method of preparing the same, and a light-emitting device comprising the quantum dot-containing material. The quantum dot-containing material may include a quantum dot and an organic group chemically bound to a surface of the quantum dot, the organic group may include an azide group and a charge transport group, and the charge transport group may not be an unsubstituted benzene group.
Palladium-catalyzed α,β-dehydrogenation of acyclic ester equivalents promoted by a novel electron deficient phosphinooxazoline ligand
作者:Tyler J. Fulton、Brenda Wu、Eric J. Alexy、Haiming Zhang、Brian M. Stoltz
DOI:10.1016/j.tet.2019.05.065
日期:2019.8
phosphinooxazoline (PHOX) ligand. The reaction proceeds from the Z-enol carbonate to provide dehydrogenation products exclusively in high E/Z selectivity, while the E-enol carbonate provides the α-allylation product with only minor dehydrogenation. The reaction proceeds with a broad scope of Z-enol carbonates derived from N-acyl indoles to furnish acyclic formal α,β-unsaturated ester equivalents.