[EN] PROCESSES FOR THE PREPARATION OF ORTHO-ALLYLATED HYDROXY ARYL COMPOUNDS<br/>[FR] PROCÉDÉS DE PRÉPARATION DE COMPOSÉS HYDROXY-ARYLE ORTHO-ALLYLÉS
申请人:UNIV MCMASTER
公开号:WO2021237371A1
公开(公告)日:2021-12-02
The present application describes process for preparing an ortho-allylated hydroxy aryl compounds such as compounds of Formula (I) by reacting an allylic alcohol with a hydroxy aryl compound in the presence of aluminum compound selected from alumina and aluminum alkoxides and in a non-protic solvent wherein at least one carbon atom ortho to the hydroxy group in the hydroxy aryl compound is unsubstituted. The present application also includes compounds of Formula (I).
Operationally Simple and Highly (<i>E</i>)-Styrenyl-Selective Heck Reactions of Electronically Nonbiased Olefins
作者:Erik W. Werner、Matthew S. Sigman
DOI:10.1021/ja203164p
日期:2011.6.29
Simple, mild, and efficient conditions are reported for a Pd(0)-catalyzed Heck reaction that delivers high yields and selectivity for (E)-styrenyl products using electronically nonbiased olefin substrates bearing a range of useful functionality. Preliminary mechanistic studies demonstrate that the σ-donating DMA solvent is crucial for high selectivity. Further studies suggest that the catalyst distinguishes
All rights reserved. First example of allylicether’s dimerization reaction was developed through olefin’s C–O bond insertion via Ag(I) catalysis. Other aromatic olefins, such as styrene and its electro-poor analogues could participate to provide the allylicether’s C–O bond insertion products.
Anti-staphylococcal activity and β-lactam resistance attenuating capacity of structural analogues of (−)-epicatechin gallate
作者:James C. Anderson、Robert A. McCarthy、Sarah Paulin、Peter W. Taylor
DOI:10.1016/j.bmcl.2011.09.116
日期:2011.12
We examined the impact of gradual removal of hydroxyl groups from the A- and B-rings of (-)-epicatechin gallate on antibacterial activity and oxacillin resistance attenuation of an epidemic strain of methicillin resistant Staphylococcus aureus. Removal of both hydroxyls from the B-ring effected a large reduction in oxacillin MIC (from 512 to 0.25 mg/mL at a concentration of 12.5 mg/L); further hydroxyl deletion of the A-ring reduced the oxacillin effect but increased intrinsic anti-staphylococcal activity (C) 2011 Elsevier Ltd. All rights reserved.