A highly chemoselective conjugateaddition of alcohols in the presence of amines is described. The cooperative nature of the catalyst enabled chemoselective activation of alcohols over amines, allowing the conjugateaddition to soft Lewis basic α,β‐unsaturated nitriles. Divergent transformation of the nitrile functionality highlights the utility of the present catalysis.
Efficient copper-catalyzed Michael addition of acrylic derivatives with primary alcohols in the presence of base
作者:Feng Wang、Haijun Yang、Hua Fu、Zhichao Pei
DOI:10.1039/c2cc37595h
日期:——
A novel and efficient copper-catalyzed Michael addition of acrylic derivatives with primary alcohols in the presence of base has been developed. The protocol uses readily available acrylic derivatives and primary alcohols as the starting materials, inexpensive CuCl2 as the catalyst, and the corresponding addition products were obtained in moderate to excellent yields.
Ruthenium Complexes with PNN Pincer Ligands Based on (Chiral) Pyrrolidines: Synthesis, Structure, and Dynamic Stereochemistry
作者:Johan Bootsma、Beibei Guo、Johannes G. de Vries、Edwin Otten
DOI:10.1021/acs.organomet.9b00765
日期:2020.2.24
Spectroscopic, crystallographic, and computational studies demonstrate that the C-centered chirality from the chiral pyrrolidine group exerts a small but non-negligible influence on the preferred stereochemistry at Ru (and N in the case of (R)-2-methylpyrrolidine) that is reflected in the equilibrium distribution of diastereomers of these Ru complexes in solution. Our data show that the N- and Ru-based
我们报告了基于N侧臂的非手性(吡咯烷)和手性((R,R)-2,5-二甲基吡咯烷和(R)-2-甲基吡咯烷)取代基的基于二甲基吡啶的PNN型金属钳配合物的合成钳配体。以具有芳香族吡啶配体主链的六配位饱和Ru钳(PNN)Ru(H)(CO)(Cl)为起始原料,用强碱(KO t Bu)处理生成相应的脱芳族钳分子(PNN')Ru(H)(CO)。光谱,晶体学和计算研究表明,手性吡咯烷基团的C中心手性对Ru(和N(在(R)-2-甲基吡咯烷)反映在溶液中这些Ru络合物的非对映异构体的平衡分布中。我们的数据显示,这类化合物中基于N和Ru的立体异构中心在立体化学上不稳定,并且讨论了差向异构化的机制。提出通过脱芳构化的Ru(0)中间体发生Ru芳构化复合物中Ru中心的转化,在该中间体中Ru结合的氢化物转移至配体。支持这一点的是通过与CO反应获得的密切相关的Ru(0)物种的光谱表征。在对映选择性oxa-Michael
ACTINIC RAY-SENSITIVE OR RADIATION-SENSITIVE RESIN COMPOSITION, RESIST FILM USING THE COMPOSITION AND PATTERN FORMING METHOD
申请人:Inasaki Takeshi
公开号:US20120301817A1
公开(公告)日:2012-11-29
An actinic ray-sensitive or radiation-sensitive resin composition comprising (P) a resin having a repeating unit represented by the following formula (1), a resist film using the composition, and a pattern forming method.
[EN] CANNABINOID RECEPTOR 1 ANTAGONISTS/INVERSE AGONISTS AND USES THEREOF<br/>[FR] ANTAGONISTES/AGONISTES INVERSES DU RÉCEPTEUR CANNABINOÏDE 1 ET LEURS UTILISATIONS
申请人:CORBUS PHARMACEUTICALS INC
公开号:WO2023196556A1
公开(公告)日:2023-10-12
Disclosed herein are compounds suitable for use in the treatment of disorders, e.g., diabetic disorder, a dyslipidemia disorder, a cardiovascular disorder, an inflammatory disorder, a hepatic disorder, cancer, or obesity or co-morbidities thereof. Also disclosed are compositions containing one or more of the compounds and uses of the compounds in the treatment of disorders in a subject.