A scalable and efficient electrocatalytic dehydrogenative esterification is reported. With an indirect electrolysis strategy, both intra- and intermolecular-type reactions were amenable to this practical method. With n-Bu4NI as the catalyst, undesired decarboxylation and Baeyer–Villiger oxidation were suppressed. More importantly, this novel method provided reliable and direct access to the natural
A novel enantioselectivebromolactonization of α,β-unsaturated ketones using bifunctional amino-urea catalysts has been developed. The scope of the reaction is evidenced by 23 examples of halolactones bearing various functionalities with up to 99% yield and 99:1 er. Unlike typical urea catalysts that require electron-deficient substituents to enhance the hydrogen bond strength, it is interesting to
[EN] NEW CCR2 RECEPTOR ANTAGONISTS AND USES THEREOF<br/>[FR] NOUVEAUX ANTAGONISTES DU RÉCEPTEUR CCR2 ET LEURS UTILISATIONS
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2011073154A1
公开(公告)日:2011-06-23
The present invention relates to novel antagonists for CCR2 (CC chemokine receptor 2) of Formula (I) and their use for providing medicaments for treating conditions and diseases, especially pulmonary diseases like asthma and COPD.
The present invention relates to novel antagonists for CCR2 (CC chemokine receptor 2) and their use for providing medicaments for treating conditions and diseases, especially pulmonary diseases like asthma and COPD.
Decarboxylative Intramolecular Arene Alkylation Using <i>N</i>-(Acyloxy)phthalimides, an Organic Photocatalyst, and Visible Light
作者:Trevor C. Sherwood、Hai-Yun Xiao、Roshan G. Bhaskar、Eric M. Simmons、Serge Zaretsky、Martin P. Rauch、Robert R. Knowles、T. G. Murali Dhar
DOI:10.1021/acs.joc.9b00432
日期:2019.7.5
An intramolecular arene alkylation reaction has been developed using the organic photocatalyst 4CzIPN, visible light, and N-(acyloxy)phthalimides as radical precursors. Reaction conditions were optimized via high-throughput experimentation, and electron-rich and electron-deficient arenes and heteroarenes are viable reaction substrates. This reaction enables access to a diverse set of fused, partially