Electrostatically-directed Pd-catalysis in combination with C–H activation: site-selective coupling of remote chlorides with fluoroarenes and fluoroheteroarenes
作者:William A. Golding、Robert J. Phipps
DOI:10.1039/d0sc00105h
日期:——
Electrostatically-directed oxidative addition is compatible with a subsequent C–H activation step, enabling site-selective coupling of remote chlorides with fluoroarenes and fluoroheteroarenes.
ORAZI O. O.; CORRAL R. A.; GIACCIO H., J. CHEM. SOC. PERKIN TRANS.,(1986) N 11, 1977-1982
作者:ORAZI O. O.、 CORRAL R. A.、 GIACCIO H.
DOI:——
日期:——
[EN] SULFONAMIDE COMPOUNDS AS OPIOID K-RECEPTOR AGONISTS<br/>[FR] COMPOSES DE SULFONAMIDE UTILISES COMME AGONISTES DES RECEPTEURS K D'OPIOIDES
申请人:PFIZER INC.
公开号:WO1994018165A1
公开(公告)日:1994-08-18
(EN) Compounds having chemical formula (I): wherein R1 is hydrogen, hydroxy, C1-C6alkoxy, tri(C1-C6alkyl)silyloxy or acyloxy; R2 is C1-C6alkyl; and Ar is optionally substituted aryl. The compounds and their pharmaceutcally acceptable salts have excellent activity as opioid $g(k)-receptor agonists. They are useful for the treatment and prevention of pain, asthma, scabis, psoriasis vulgaris or inflammation, especially pain, in mammalian subjects, e.g., human subjects.(FR) L'invention concerne des composés de la formule chimique (I), dans laquelle R1 représente hydrogène, hydroxy, alcoxy C1-C6, tri(alkyle C1-C6)silyloxy ou acyloxy; R2 représente alkyle C1-C6; et Ar représente aryle facultativement substitué. Les composés ainsi que leurs sels pharmaceutiquement acceptables présentent une excellente activité en tant qu'agonistes des récepteurs $g(k) d'opioides. Ils sont utiles dans le traitement et dans la prévention d'algies, de l'asthme, de la galle, du psoriasis vulgaris ou d'inflammations, notamment de douleurs chez des sujets mammifères, par exemple chez l'homme.
Site-Selective Cross-Coupling of Remote Chlorides Enabled by Electrostatically Directed Palladium Catalysis
作者:William A. Golding、Robert Pearce-Higgins、Robert J. Phipps
DOI:10.1021/jacs.8b08686
日期:2018.10.24
Control of site-selectivity in chemical reactions that occur remote from existing functionality remains a major challenge in synthetic chemistry. We describe a strategy that enables three of the most commonly used cross-coupling processes to occur with high site-selectivity on dichloroarenes that bear acidic functional groups. We have achieved this by repurposing an established sulfonylated phosphine