Enantioselective Ni-Catalyzed Electrochemical Synthesis of Biaryl Atropisomers
作者:Hui Qiu、Bin Shuai、Yun-Zhao Wang、Dong Liu、Yue-Gang Chen、Pei-Sen Gao、Hong-Xing Ma、Song Chen、Tian-Sheng Mei
DOI:10.1021/jacs.9b13117
日期:2020.6.3
A scalable enantioselective nickel-catalyzed electrochemical reductive homocoupling of aryl bromides has been developed, affording enantioenriched axially chiral biaryls in good yield under mild conditions using electricity as a reductant in an undivided cell. Common metal reductants such as Mn or Zn powder resulted in significantly lower yields in the absence of electric current under otherwise identical
The frame rearrangement reaction of dinaphthyl ketones, possessing hydroxy groups at appropriate positions, into phenalenone derivatives under acidic conditions was discovered serendipitously. Although this rearrangement had limited scope, its mechanism was unusual, involving the division of naphthalene rings into one phenalenone ring and one benzene ring. The reaction mechanism was elucidated by direct
偶然发现了在酸性条件下在适当位置具有羟基的二萘甲酮向苯丙烯酮衍生物的骨架重排反应。尽管这种重排的范围有限,但是其机理却很不寻常,涉及将萘环分为一个菲拉烯酮环和一个苯环。通过使用1 H NMR测量直接确定中间结构来阐明反应机理。预计生成的非对苯二酚是天然产物和功能材料的关键中间体。
8-azabicyclo[3.2.1]oct-2-ene and -octane derivatives
申请人:——
公开号:US20020035122A1
公开(公告)日:2002-03-21
The present invention relates to novel 8-azabicyclo[3.2.1.]oct-2-ene and -octane derivatives which are found to be cholinergic ligands at the nicotinic Acetyl Choline Receptors. Due to their pharmacological profile the compounds of the invention may be useful for the treatment of diseases or disorders as diverse as those related to the cholinergic system of the central nervous system (CNS), diseases or disorders related to smooth muscle contraction, endocrine diseases or disorders, diseases or disorders related to neurodegeneration, diseases or disorders related to inflammation, pain, and withdrawal symptoms caused by the termination of chemical substances.
Reported herein is the use of ligands to tune the regioselectivity and reactivity of palladium-catalyzed [3+2] and [3+3] cycloadditions.
本文报告了使用配体来调节钯催化的[3+2]和[3+3]环加成反应的区域选择性和反应性。
8-Azabicyclo[3.2.1]oct-2-ene and -octane derivatives technical field
申请人:NEUROSEARCH A/S
公开号:US20040116703A1
公开(公告)日:2004-06-17
The present invention relates to novel 8-azabicyclo[3.2.1]oct-2-ene and -octane derivatives which are found to be cholinergic ligands at the nicotinic Acetyl Choline Receptors.
Due to their pharmacological profile the compounds of the invention may be useful for the treatment of diseases or disorders as diverse as those related to the cholinergic system of the central nervous system (CNS), diseases or disorders related to smooth muscle contraction, endocrine diseases or disorders, diseases or disorders related to neurodegeneration, diseases or disorders related to inflammation, pain, and withdrawal symptoms caused by the termination of abuse of chemical substances.