Herein, we report a catalyst system for Pd-catalyzed decarbonylative Suzuki–Miyauracross-coupling of aroyl chlorides with boronic acids to furnish biaryls. This strategy is suitable for a broad range of common aroyl chlorides and boronic acids. The synthetic utility is highlighted in the direct late-stage functionalization of pharmaceuticals and natural products capitalizing on the presence of carboxylic
Palladium‐Catalyzed Decarbonylative Difluoromethylation of Acid Chlorides at Room Temperature
作者:Fei Pan、Gregory B. Boursalian、Tobias Ritter
DOI:10.1002/anie.201811139
日期:2018.12.17
Methods for the direct synthesis of difluoromethylated arenes are sparse, despite the importance of the difluoromethyl group in medical, agro‐, and materials chemistry. A palladium‐catalyzed decarbonylative cross‐coupling reaction of acid chlorides with a difluoromethyl zinc reagent is achieved to access difluoromethylated compounds. The transformation proceeds at roomtemperature and shows broad functional
A one-pot synthesis of tetrazolones from acid chlorides: understanding functional group compatibility, and application to the late-stage functionalization of marketed drugs
作者:Matthew A. J. Duncton、Rajinder Singh
DOI:10.1039/c6ob01644h
日期:——
The method could be used for the late-stage functionalization of pharmaceuticals, to provide tetrazolone congeners of the marketed drugs aspirin, indomethacin, probenecid, telmisartan, bexarotene, niacin (vitamin B3), and the active metabolite of the recently-launched immuno-modulatory agent, BG-12 (Tecfidera®). The ability of a tetrazolone group to serve as a bioisostere of a carboxylic acid, and
The present disclosure provides compounds that include a tetrazolone derivative of a carboxyl group of an active agent. This disclosure also relates to pharmaceutical compositions that include these compounds, methods of using these compounds in the treatment of various diseases and disorders, and processes for preparing these compounds.
synthesis and cytotoxic potencies of new Pt(IV) complexes with lonidamine and bexarotene ligand tethered to Pt-center via a succinate-ethylenediamine linker. The in vitro results for a series of complexes with cisplatin, dichloride(ethane-1,2-diamine)platinum(II), or oxaliplatin core indicate that the addition to the structure lonidamine or bexarotene moiety can confer activity or selectivity of Pt(IV) complexes