Cross‐Si‐ing the Jordan: Cross‐coupling reactions of 2‐(2‐hydroxyprop‐2‐yl)phenyl‐substituted alkylsilanes with a variety of aryl halides proceed in the presence of palladium and copper catalysts. The use of K3PO4 base allows for highly chemoselective alkyl coupling with both primary and secondary alkyl groups (Alk).
乔丹的交叉反应:2-(2-羟基丙-2-基)苯基取代的烷基硅烷与各种芳基卤化物的交叉偶联反应在钯和铜催化剂的存在下进行。K 3 PO 4碱的使用允许与伯烷基和仲烷基(Alk)都高度化学选择性的烷基偶联。
[EN] PREPARATION OF PRECURSORS FOR LEUKOTRIENE ANTAGONISTS<br/>[FR] PRÉPARATION DE PRÉCURSEURS D'ANTAGONISTES DE LEUCOTRIÈNE
申请人:MERCK SHARP & DOHME
公开号:WO2014081616A1
公开(公告)日:2014-05-30
The present invention relates to an improved process for the preparation of a compound having formula (I). The compound having formula (I) is the backbone diol precursor/intermediate used to produce montelukast sodium. Montelukast sodium is a leukotriene antagonist and is a useful agent in the treatment of asthma as well as other conditions mediated by leukotrienes, such as inflammation and allergies, e.g. allergic rhinitis.
[EN] SILICON-BASED CROSS COUPLING AGENTS<br/>[FR] AGENTS DE COUPLAGE CROISÉ À BASE DE SILICIUM ET LEURS PROCÉDÉS D'UTILISATION
申请人:UNIV PENNSYLVANIA
公开号:WO2013185021A3
公开(公告)日:2014-01-30
The Design, Synthesis and Validation of Recoverable and Readily Reusable Siloxane Transfer Agents for Pd-Catalyzed Cross-Coupling Reactions
作者:Dionicio Martinez-Solorio、Adam T. Hoye、Minh H. Nguyen、Amos B. Smith
DOI:10.1021/ol400922j
日期:2013.5.17
The development of competent, recoverable and reusable 1-oxa-2-silacyclopentene (siloxane) transfer agents for Pd-catalyzed cross-coupling reactions (CCRs) of organolithium reagents with aryl and alkenyl iodides has been achieved. Drawbacks of the first-generation siloxane-transfer agent (1), relating to facile recovery for potential recycling, have been addressed.