Rhodium(III)-Catalyzed<i>ortho</i>-Heteroarylation of Phenols through Internal Oxidative CH Activation: Rapid Screening of Single-Molecular White-Light-Emitting Materials
作者:Bijin Li、Jingbo Lan、Di Wu、Jingsong You
DOI:10.1002/anie.201507272
日期:2015.11.16
Reported herein is the first example of a transition‐metal‐catalyzed internaloxidativeCH/CH cross‐coupling between two (hetero)arenes through a traceless oxidation directing strategy. Without the requirement of an external metal oxidant, a wide range of phenols, including phenol‐containing natural products, can undergo the coupling with azoles to assemble a large library of highly functionalized
An efficient method, tandem [3 + 2] cycloaddition–decarboxylation of α-keto acid and isocyanide promoted by copper salt, has been developed. Under oxidant-free conditions, a series monosubstituted oxazoles have been constructed. Different from the traditional application of α-oxo acids as acyl surrogates, the elegant approach herein ingeniously avoids consuming excess oxidants.
Copper(II)-Catalyzed Dehydrogenative Cross-Coupling between Two Azoles
作者:Xurong Qin、Boya Feng、Jiaxing Dong、Xiaoyu Li、Ying Xue、Jingbo Lan、Jingsong You
DOI:10.1021/jo301128y
日期:2012.9.7
The copper(II)-catalyzed dehydrogenative coupling between two different azoles for the preparation of unsymmetrical biazoles has been developed. The current catalytic system can effectively control the chemoselectivity for heterocoupling over homocoupling.
Palladium(II)-Catalyzed Oxidative CH/CH Cross-Coupling between Two Structurally Similar Azoles
作者:Jiaxing Dong、Yumin Huang、Xurong Qin、Yangyang Cheng、Jing Hao、Danyang Wan、Wei Li、Xingyan Liu、Jingsong You
DOI:10.1002/chem.201103813
日期:2012.5.14
Power of two: A widely functional‐group tolerant, selective and rapid oxidative cross‐coupling betweentwostructurallysimilarazoles has been carried out by using a palladium/copper co‐catalytic twofold CH activation method (see scheme).
The present invention relates to a β3 adrenergic receptor agonist of formula (I); or a pharmaceutical salt thereof; which is capable of increasing lipolysis and energy expenditure in cells and, therefore, is useful, e.g., for treating Type 2 diabetes and/or obesity.