Copper-mediated tandem ring-opening/cyclization reactions of cyclopropanols with aryldiazonium salts: synthesis of <i>N</i>-arylpyrazoles
作者:Jidan Liu、Erjie Xu、Jinyuan Jiang、Zeng Huang、Liyao Zheng、Zhao-Qing Liu
DOI:10.1039/c9cc09657d
日期:——
A general method for the synthesis of structurally diverse N-arylpyrazoles from readily available cyclopropanols and aryldiazonium salts is disclosed. The reaction was conducted at room temperature within minutes with a broad substrate scope and excellent regioselectivity.
[EN] MUSCARINIC ACETYLCHOLINE M1 RECEPTOR ANTAGONISTS<br/>[FR] ANTAGONISTES DES RÉCEPTEURS MUSCARINIQUES DE L'ACÉTYLCHOLINE M1
申请人:PIPELINE THERAPEUTICS INC
公开号:WO2021071843A1
公开(公告)日:2021-04-15
Provided herein, inter alia, are compounds which are useful as antagonists of the muscarinic acetylcholine receptor M1 (mAChR M1); synthetic methods for making the compounds; pharmaceutical compositions comprising the compounds; and methods of treating neurological and psychiatric disorders associated with muscarinic acetylcholine receptor dysfunction using the compounds and compositions.
Silver-Catalyzed Ring-Opening Strategy for the Synthesis of β- and γ-Fluorinated Ketones
作者:Huijun Zhao、Xuefeng Fan、Jiajia Yu、Chen Zhu
DOI:10.1021/jacs.5b00939
日期:2015.3.18
A regioselective synthesis of β- and γ-fluorinated ketones via silver-catalyzed ring opening is described. A variety of β- and γ-fluorinated ketones are efficiently prepared, respectively, from tertiary cyclopropanol and cyclobutanol precursors, providing a straightforward approach for the introduction of a fluorine atom into complex molecules. Preliminary mechanistic studies suggest that a radical-mediated
描述了通过银催化开环的 β- 和 γ-氟化酮的区域选择性合成。各种β-和γ-氟化酮分别由叔环丙醇和环丁醇前体有效制备,为将氟原子引入复杂分子提供了一种直接的方法。初步机理研究表明,涉及自由基介导的连续 CC 键裂解和 CF 键形成途径。
Mn(III)-Mediated Reactions of Cyclopropanols with Vinyl Azides: Synthesis of Pyridine and 2-Azabicyclo[3.3.1]non-2-en-1-ol Derivatives
作者:Yi-Feng Wang、Shunsuke Chiba
DOI:10.1021/ja905110c
日期:2009.9.9
to the formation of 2-azabicyclo[3.3.1]non-2-en-1-ol derivatives using a catalytic amount of Mn(acac)(3). These reactions may be initiated by a radicaladdition of beta-keto radicals, generated by the one-electron oxidation of cyclopropanols, to vinyl azides to give iminyl radicals, which would cyclize with the intramolecular carbonyl groups. In addition, versatile transformations of 2-azabicyclo[3.3
Mn(III)-mediated formal [3+3]-annulation has been developed using readily available vinylazides and cyclopropanols with a wide range of substituents. Vinylazides were successfully applied as a three-atom unit including one nitrogen to prepare pyridines and δ-lactams by the reactions with monocyclic cyclopropanols as well as to construct 2-azabicyclo[3.3.1] and 2-azabicyclo[4.3.1] frameworks with