F for fast: The perfluorinated solvent C6F14 is the key to a new variant of the Balz–Schiemann reaction for the synthesis of fluorinated arenes. Triazenes are converted into fluoroarenes under mild conditions on a support and in solution (see scheme). The method is straightforward and inexpensive, and yields previously difficult‐to‐prepare fluoroarenes in high purity.
快速反应的F:全氟化溶剂C 6 F 14是Balz-Schiemann反应新变体(用于合成氟化芳烃)的关键。在温和的条件下,将三氮烯在载体和溶液中转化为氟代芳烃(参见方案)。该方法简便易行且价格便宜,并且可以产生以前难以制备的高纯度氟代芳烃。
[EN] 2, 3, 6-TRISUBSTITUTED-4-PYRIMIDONE DERIVATIVES<br/>[FR] DERIVES DE 2,3,6-TRISUBSTITUE 4-PYRIMIDONE
申请人:MITSUBISHI PHARMA CORP
公开号:WO2004085408A1
公开(公告)日:2004-10-07
A pyrimidone derivative having tau protein kinase 1 inhibitory activity which is represented by formula (I) or a salt thereof, or a solvate thereof or a hydrate thereof; useful for prventive and/or therapeutic treatment of diseass such as neurodegenerative diseases (e.g. Alzheimer disease); wherein Q represents CH or nitrogen atom; R represents a C1-C12 alkyl group; the ring of Formula (I): represents piperazine ring or piperidine ring; each X independently represents a C1-C8 alkyl group, an optionally partially hydrogenated C6-C10 aryl ring, an indan ring or the like; m represents an integer of 1 to 3; each Y independently represents a halogen atom, a hydroxy group, a cyano group, a C1-C6 alkyl group or the like; n represents an integer of 0 to 8; when X and Y or two Y groups are attached on the same carbon atom, they may combine to each other to form a C2-C6 alkylene group.
Modular and Selective Arylation of Aryl Germanes (C−GeEt
<sub>3</sub>
) over C−Bpin, C−SiR
<sub>3</sub>
and Halogens Enabled by Light‐Activated Gold Catalysis
作者:Grant J. Sherborne、Avetik G. Gevondian、Ignacio Funes‐Ardoiz、Amit Dahiya、Christoph Fricke、Franziska Schoenebeck
DOI:10.1002/anie.202005066
日期:2020.9
rapid and programmable construction of bi‐ or multiaryls. To this end, the next frontier of synthetic modularity will likely arise from harnessing the coupling space that is orthogonal to the powerful Pd‐catalyzed coupling regime. This report details the realization of this concept and presents the fully selective arylation of aryl germanes (which are inert under Pd0/PdII catalysis) in the presence of
There is provided compounds of formula I,
wherein R
1
to R
7
have meanings given in the description, which are useful in the prophylaxis and in the treatment of arrhythmias, in particular atrial and ventricular arrhythmias.