A General and Efficient Catalyst for Palladium-Catalyzed C−O Coupling Reactions of Aryl Halides with Primary Alcohols
作者:Saravanan Gowrisankar、Alexey G. Sergeev、Pazhamalai Anbarasan、Anke Spannenberg、Helfried Neumann、Matthias Beller
DOI:10.1021/ja103248d
日期:2010.8.25
An efficient procedure for palladium-catalyzedcoupling reactions of (hetero)aryl bromides and chlorides with primary aliphatic alcohols has been developed. Key to the success is the synthesis and exploitation of the novel bulky di-1-adamantyl-substituted bipyrazolylphosphine ligand L6. Reaction of aryl halides including activated, nonactivated, and (hetero)aryl bromides as well as arylchlorides with
Pd(II)-catalyzed Enantioselective Beta-Methylene C(sp3)–H Bond Activation
申请人:The Scripps Research Institute
公开号:US20190315710A1
公开(公告)日:2019-10-17
Chiral acetyl-protected aminoethyl quinoline (APAQ), pyridine and imazoline ligands are disclosed that enable Pd (II)-catalyzed enantioselective arylation or heteroarylation of ubiquitous prochiral β-methylene C—H bonds of aliphatic amides offers an alternative disconnection for constructing β-chiral centers. Systematic tuning of the ligand structure reveals that a six-membered instead of a five-membered chelation of these types of ligands with the Pd(II) is important for accelerating the C(sp
3
)-H activation thereby achieving enantioselectivity for quinoline and pyridine ligands.
[EN] BENZYLPHOSPHATE AND SUBSTITUTED BENZYLPHOSPHATE PRODRUGS FOR TRE TREATMENT OF PULMONARY INFLAMMATION<br/>[FR] PROMEDICAMENTS DE BENZYLPHOSPHATE ET DE BENZYLPHOSPHATE SUBSTITUE UTILISES DANS LE TRAITEMENT D'UNE INFLAMMATION PULMONAIRE
申请人:CORUS PHARMA
公开号:WO2005063777A1
公开(公告)日:2005-07-14
A prodrug of a corticosteroid, lidocaine or related local anesthetic composition for formulation for delivery by aerosolization to inhibit inflammation in asthmatic lungs is described. The prodrug is preferably formulated in a 5 ml solution of a quarter normal saline having pH between 5.0 and 7.0 for the treatment of respiratory tract inflammation by an aerosol having mass medium average diameter predominantly between 1 to 5 µ produced by nebulization or dry powder inhaler.
A Direct C2-Selective Phenoxylation and Alkoxylation of Quinoline <i>N</i>
-Oxides with Various Phenols and Alcohols in the Presence of <i>H</i>
-Phosphonate
A practical and efficient method for the synthesis of 2-aroxy(alkoxy)quinolines has been developed, via direct cross-dehydrogenativecoupling reaction between quinoline N-oxides and readily available phenols and alcohols in the presence of H-phosphonate and CCl4 under mild conditions.