Isopropylmagnesium chloride-promoted unilateral addition of Grignard reagents to β-diketones: one-pot syntheses of β-tertiary hydroxyl ketones or 3-substituted cyclic-2-enones
作者:Rui Yuan、Dan Zhao、Li-Yuan Zhang、Xiang Pan、Yan Yang、Pei Wang、Hong-Feng Li、Chao-Shan Da
DOI:10.1039/c5ob02072g
日期:——
unilateral additions of Grignardreagents to acyclic or cyclic β-diketones were effectively promoted by sub-stoichiometric amounts of i-PrMgCl to afford β-tertiary hydroxyl ketones or 3-substituted cyclic-2-enones, respectively. Also, the addition of Grignardreagents to acyclic β-diketones followed by a reaction with cyclic β-diketones in a one-pot process was put forward. The reaction mechanism was discussed
Palladium-catalyzed intramolecular 5-endo–trig oxidative Heck cyclization: a facile pathway for the synthesis of some sesquiterpene precursors
作者:Devalina Ray、Sunanda Paul、Sulagna Brahma、Jayanta. K. Ray
DOI:10.1016/j.tetlet.2007.09.052
日期:2007.11
An efficient and convenient method for the construction of substituted cyclopentenones via palladium-catalyzed intramolecular 5-endo–trig oxidative cyclization has been introduced as a powerful new strategy for the synthesis of sesquiterpenes.
An asymmetric four‐component [5+1+1+1] formal cycloaddition reaction of 3‐substituted 2‐cyclopentenones, activated methylene nucleophiles and two molecules of aldehydes is developed under chiral primary aminocatalysis, producing a diversity of highly enantioenriched fused and spirocyclic frameworks with high molecular complexity. Mechanism studies indicate that the current reaction proceeds in a challenging
Novel Arylbicyclo[3.1.0]Hexylamines And Methods And Compositions For Their Preparation And Use
申请人:Skolnick Phil
公开号:US20080194696A1
公开(公告)日:2008-08-14
The invention provides novel arylbicyclo[3.1.0]hexylamines, and related processes and intermediates for preparing these compounds, as well as compositions and methods employing these compounds for the treatment and/or prevention of central nervous system (CNS) disorders, including but not limited to depression and anxiety.
Arylbicyclo[3.1.0]hexylamines and methods and compositions for their preparation and use
申请人:DOV Pharmaceutical, Inc.
公开号:US08138377B2
公开(公告)日:2012-03-20
The invention provides novel arylbicyclo[3.1.0]hexylamines, and related processes and intermediates for preparing these compounds, as well as compositions and methods employing these compounds for the treatment and/or prevention of central nervous system (CNS) disorders, including but not limited to depression and anxiety.