Copper-Catalyzed Decarboxylative Cross-Coupling of Potassium Polyfluorobenzoates with Aryl Iodides and Bromides
作者:Rui Shang、Yao Fu、Yan Wang、Qing Xu、Hai-Zhu Yu、Lei Liu
DOI:10.1002/anie.200904916
日期:2009.11.23
For copper only: The decarboxylative cross‐coupling of readily accessible and nonvolatile potassiumpolyfluorobenzoates with aryliodides and bromides using a copper catalyst provides polyfluorobiaryls and polyfluorostilbenes in excellent yields (see scheme). Mechanistic analyses are reported for the title reaction.
cobalt-catalyzed hetero-biaryl couplingreaction between aryl chlorides and arylmagnesium halides with unprecedented selectivity has been developed. The protocol utilizes 1 mol% of cheap Co(acac)3 as pre-catalyst and effects clean reactions of deactivated chlorostyrenes with only 1.1 equiv. of the Grignard reagent under mild conditions (30 °C, 5–30 min). Highly chemoselective reactions were realized even in
4-(biphenylcarbonylamino)piperidine derivatives as mtp inhibitors
申请人:——
公开号:US20040034028A1
公开(公告)日:2004-02-19
The present invention relates to compounds of the formula (I): in which: Z represents biphenyl optionally substitute in position 2′, 3′, 4′, 5′ and 6′ with one or more substitutents chosen from trihalomethyl and trihalomethoxy; Het represents quinolyl, quinoxalyl or pyridyl optionally substituted with one or more substitutents chosen from halo, cyano, nitro, (C
1
-C
6
)alkyl, (C
6
-C
12
)aryl, (C
1
-C
6
)alkoxy, hydroxyl, (C
1
-C
6
)thioalkoxy, carboxyl and (C
1
-C
6
)alkoxycarbonyl, or pharmaceutically acceptable salts thereof. These compounds are useful as inhibitors of microsomal triglyceride transfer protein and as inhibitors of the secretion of B apoproteins.