SUBSTITUTED IMIDAZOLONE DERIVATIVES, PREPARATIONS AND USES
申请人:Bouey Edith
公开号:US20100004159A1
公开(公告)日:2010-01-07
The present invention relates to polysubstituted imidazolone derivatives, to the pharmaceutical compositions comprising them and to the therapeutic uses thereof in the human and animal health fields. The present invention also relates to a process for preparing these derivatives.
Lewis Acid Mediated Electrophilic Cyanation of 2,2′-Biphenols
作者:Wu Zhang、Wen Yang、Wanxiang Zhao
DOI:10.1021/acs.joc.0c00458
日期:2020.7.2
A Lewisacidmediated electrophilic cyanation of 2,2′-biphenols with a trifluoromethanesulfonyl (Tf) protecting group is reported. The cyanation reactions with less toxic, commercially available MeSCN as a cyanating reagent afforded a range of 3-cyan-2,2′-biphenols in moderate to high yields. The use of trifluoromethanesulfonyl (Tf) as a protecting group is crucial to the success of this transformation
Rhodium(III)-Catalyzed Cascade Redox-Neutral C-H Functionalization and Aromatization: Synthesis of Unsymmetrical<i>ortho</i>-Biphenols
作者:Zhiyong Hu、Guixia Liu
DOI:10.1002/adsc.201601296
日期:2017.5.17
An efficient rhodium(III)‐catalyzed coupling reaction of N‐aryloxyacetamides with 6‐diazo‐2‐cyclohexenones through a cascade redox‐neutral C–H functionalization and aromatization has been developed. This novel and scalable transformation provides a straightforward way to construct unsymmetrical ortho‐biphenols with broad substrate scope under mild and redox‐neutral conditions. The synthetic utility
Kruber; Lautenstein, Chemische Berichte, 1941, vol. 74, p. 1693,1695
作者:Kruber、Lautenstein
DOI:——
日期:——
2,2′-Biphenols via Protecting Group-Free Thermal or Microwave-Accelerated Suzuki–Miyaura Coupling in Water
作者:Bernd Schmidt、Martin Riemer、Manfred Karras
DOI:10.1021/jo401398n
日期:2013.9.6
User-friendly protocols for the protecting group-free synthesis of 2,2'-biphenols via Suzuki-Miyaura coupling of o-halophenols and o-boronophenol are presented. The reactions proceed in water in the presence of simple additives such as K2CO3, KOH, KF, or TBAF and with commercially available Pd/C as precatalyst. Expensive or laboriously synthesized ligands or other additives are not required. In the case of bromophenols, efficient rate acceleration and short reaction times were accomplished by microwave irradiation.