Efficient Palladium-Catalyzed Nucleophilic Addition of Triorganoindium Reagents to Carbocyclic Derivatives
摘要:
Palladium (0)-catalyzed allylic substitution reactions employing triorganoindium reagents have been investigated. In situ generated vinyl- and arylindiums react with substituted and unsubstituted cyclohex-2-enyl esters in the presence of 1-3 mol % Pd-2(dba)(3) to produce vinyl- or arylcyclohexenes in moderate to excellent yields. The stereoselectivity of this process was also examined, and evidence is presented that the reaction proceeds with inversion of stereochemical configuration.
Intramolecular Morita–Baylis–Hillman adducts via sequential MBH and ring-closing-metathesis reactions
摘要:
Using a tandem Morita-Baylis-Hiliman (MBH) and ring-closing-metathesis (RCM) sequence, an alternative high yielding method for the construction of intramolecular Morita-Baylis-Hillman (IMBH) mono- and bicyclic functionalized cycloalkenols is reported. (c) 2005 Elsevier Ltd. All rights reserved.
Development of Aliphatic Alcohols as Nucleophiles for Palladium-Catalyzed DYKAT Reactions: Total Synthesis of (+)-Hippospongic Acid A
作者:Barry M. Trost、Michelle R. Machacek、Hong C. Tsui
DOI:10.1021/ja050340q
日期:2005.5.1
The ability to use aliphatic alcohols as competent nucleophiles in the palladium-catalyzed dynamic kinetic asymmetric transformation of Baylis-Hillman adducts is explored. High yield and enantioselectivity is obtained for both the kinetic transformation and dynamic kinetic transformation. The absolute stereochemistry of the products is used to explore the reactive conformation of 2-substituted pi-allyl
[EN] CYCLOALKYLNITRILE PYRAZOLE CARBOXAMIDES AS JANUS KINASE INHIBITORS<br/>[FR] CYCLOALKYLNITRILE PYRAZOLE CARBOXAMIDES EN TANT QU'INHIBITEURS DE JANUS KINASE
申请人:MERCK SHARP & DOHME
公开号:WO2013040863A1
公开(公告)日:2013-03-28
Cycloalkylnitrile pyrazole carboxamides as JAK inhibitors useful for the treatment of JAK-mediated diseases such as rheumatoid arthritis, asthma, COPD and cancer are provided.
Copper-Catalyzed Asymmetric Allylic Alkylation of Racemic Cyclic Substrates: Application of Dynamic Kinetic Asymmetric Transformation (DYKAT)
作者:Jean-Baptiste Langlois、Alexandre Alexakis
DOI:10.1002/adsc.200900790
日期:2010.2.15
The copper-catalyzedasymmetricallylicalkylation (AAA) is of great interest in organic synthesis. This reaction was extensively studied using a broad range of substrates, ligands and organometallic reagents. However, the use of racemic substrates was still limited. Although some processes of kinetic resolution are reported in the literature, no examples of quantitative deracemization are described
La reaction de Wittig-Horner en milieu heterogene IX. Bis aldolisation des phosphonates a partir des dialdehydes aliphatiques en milieu aqueux peu basique. Synthese de cyclenols fonctionnels.
作者:M. Graff、A. Al Dilaimi、P. Seguineau、M. Rambaud、J. Villieras
DOI:10.1016/s0040-4039(00)84318-x
日期:1986.1
Aqueous solutions of glutaraldehyde and succinaldehyde give respectively improved yields of 1-functional 6-cyclohexenols and 5-cyclopentenols, when subjected to WITTIG-HORNER reaction in water at room temperature, with potassium carbonate as a base.
ACYCLIC CYANOETHYLPYRAZOLES AS JANUS KINASE INHIBITORS
申请人:Brubaker Jason
公开号:US20140228358A1
公开(公告)日:2014-08-14
The instant invention provides compounds of formula I which are JAK inhibitors, and as such are useful for the treatment of JAK-mediated diseases such as rheumatoid arthritis, asthma, COPD and cancer.