Amplification of Trichloroisocyanuric Acid (TCCA) Reactivity for Chlorination of Arenes and Heteroarenes via Catalytic Organic Dye Activation
作者:David A. Rogers、Adam T. Bensalah、Alvaro Tomas Espinosa、John L. Hoerr、Fares H. Refai、Amy K. Pitzel、Juan J. Alvarado、Angus A. Lamar
DOI:10.1021/acs.orglett.9b01414
日期:2019.6.7
electron-withdrawing groups are chlorinated in good to excellent yields (scalable to gram scale) using trichloroisocyanuricacid (TCCA) and catalytic Brilliant Green (BG). Visible-light activation of BG serves to amplify the electrophilic nature of TCCA, providing a mild alternative approach to acid-promoted chlorination of deactivated (hetero)aromatic substrates. The utility of the TCCA/BG system is demonstrated
Reactivity of antipyrine and haloantipyrines in Pd-catalyzed C H bond arylations
作者:Arpan Sasmal、Jitendra K. Bera、Henri Doucet、Jean-François Soulé
DOI:10.1016/j.tetlet.2020.151798
日期:2020.4
We reported herein the Pd-catalyzed direct arylation of antipyrine using Pd(OAc)2 as catalyst associated with KOAc as inexpensive base. In most cases, diethyl carbonate was used a sustainable solvent. The reaction tolerated a wide range of functional groups on the aryl bromide partners (e.g., nitrile, nitro, chloro, fluoro, formyl, acetyl, propionyl, benzoyl, ester, methyl, methoxy). In addition, some
Pyrazolone Compounds As Metabotropic Glutamate Receptor Agonists For The Treatment Of Neurological And Psychiatric Disorders
申请人:Balestra Michael
公开号:US20090069340A1
公开(公告)日:2009-03-12
Compounds of Formula (I), wherein R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, X, and n are as defined for Formula (I) in the description, processes for the preparation of the compounds and new intermediates employed in the preparation, pharmaceutical compositions containing the compounds, and the use of the compounds in the treatment or prevention of neurological and psychiatric disorders associated with glutamate dysfunction.
A medical assembly includes an implant and an envelope at least partially enclosing a portion of the implant. The envelope may include a tongue to protect the implant, a scaffold to provide integrity to the envelope, a tab access to ease envelope withdrawal, and/or one or more discontinuities to ease envelope withdrawal.
Surgical implants of the present disclosed include a film comprising a first therapeutic agent and a mesh comprising a second therapeutic agent. The surgical implant includes a film in direct contact with a mesh. The first therapeutic agent may be released at a first rate and the second therapeutic agent may be released at a second rate.