[Pd(Phbz)(X)(PPh<sub>3</sub>)] palladacycles promote the base-free homocoupling of arylboronic acids in air at room temperature
作者:Anant R. Kapdi、Gopal Dhangar、Jose Luis Serrano、Jose A. De Haro、Pedro Lozano、Ian J. S. Fairlamb
DOI:10.1039/c4ra09678a
日期:——
Homocoupling of arylboronicacids can be successfully achieved in commercial grade THF using [Pd(Phbz)(X)(PPh3)] palladacycles as catalysts (Phbz = N-phenylbenzaldimine; X = imidate or acetate). Symmetric biaryls were obtained in good yields working under mild conditions in an air atmosphere at room temperature. The reaction occurs without the addition of an exogenous base. The reaction conditions
使用[Pd(Phbz)(X)(PPh 3)] Palladacycles作为催化剂(Phbz = N-苯基苯甲二胺; X =亚氨酸酯或乙酸酯),可以在商业级THF中成功实现芳基硼酸的均偶联。在温和条件下,室温下在大气条件下以高收率获得对称的联芳基。该反应在不添加外源碱的情况下发生。优化反应条件以提供优异收率的均相偶联产物。已经收集了金属转移步骤对于催化剂前活化很重要的证据。已通过竞争实验评估了芳基硼酸的电子性质对均偶联反应结果的影响。
MLK INHIBITORS AND METHODS OF USE
申请人:Gelbard Harris A.
公开号:US20150105401A1
公开(公告)日:2015-04-16
Provided are compounds having an inhibitory effect on Mixed Lineage Kinases. Also provided are pharmaceutical compositions, methods of preparing the compounds, synthetic intermediates, and methods of using the compounds, independently or in combination with other therapeutic agents, for treating diseases and conditions which are affected by Mixed Lineage Kinase inhibition. Also provided are methods of treatment of neuropsychiatric disorders which comprise the inhibition of Mixed Lineage Kinases.
Clay encapsulated Cu(OH)x promoted homocoupling of arylboronic acids: An efficient and eco-friendly protocol
作者:Bashir Ahmad Dar、Snehil Singh、Nalini Pandey、A.P. Singh、Priti Sharma、Anish Lazar、Meena Sharma、Ram A. Vishwakarma、Baldev Singh
DOI:10.1016/j.apcata.2013.10.048
日期:2014.1
Cu(OH)(x) has been encapsulated over montmorillonite-KSF by simple ologomeric deposition strategy. The resulting catalyst has been employed for selective homocoupling of arylboronic acids under ambient conditions without requirement of any ligand or base. This catalyst is easy to recover and shows excellent reusability without losing its activity. Techniques like XRD, SEM, TPR, IR, BET surface area measurement and XPS were used to characterize the catalyst. The present method promises for the simple and clean homocoupling of arylboronic acids. (C) 2013 Elsevier B.V. All rights reserved.
Hellberg Jonas, Pelcman Margit E., Tetrahedron Lett, 35 (1994) N 11, S 1769-1772