Catalytic Decarboxylative Fluorination for the Synthesis of Tri- and Difluoromethyl Arenes
摘要:
Treatment of readily available alpha,alpha-difluoro- and alpha-fluoroarylacetic acids with Selecffluor under Ag(I) catalysis led to decarboxylative fluorination. This operationally simple reaction gave access to tri- and difluoromethylarenes applying a late-stage fluorination strategy. Translation to [F-18]labeling is demonstrated using [F-18]Selectfluor bis(triflate), a reagent affording [F-18]tri- and [F-18]difluoromethylarenes not within reach with [F-18]F-2.
Easy Access to Difluoromethylene-Containing Arene Analogues through Palladium-Catalysed C-H Olefination
作者:Changdong Shao、Guangfa Shi、Yanghui Zhang
DOI:10.1002/ejoc.201600954
日期:2016.11
An efficient palladium-catalyzed ortho C−H olefination of α,α-difluorophenylacetic acidderivatives using 8-aminoquinoline as the bidentate directing group has been developed. A range of olefinated arenes can be synthesized in a concise way. This reaction provides an easy and straightforward access to a panel of difluoromethylated arene analogues in moderate to good yields with a satisfactory tolerance
[18F]arylCF3 and [18F]arylCHF2 derivatives from arylCF2Br and arylCHFCl precursors applying a silver-mediated halogenexchange with [18F]fluoride. In the absence of Ag(I)OTf, no reaction takes place at room temperature for both classes of substrates; this result demonstrates the beneficial role of silver(I) as a means to induce 18F-incorporation under very mild conditions.
ANTIPROLIFERATIVE COMPOUNDS AND METHODS OF USE THEREOF
申请人:Celgene Corporation
公开号:US20200163948A1
公开(公告)日:2020-05-28
Compounds of formula I for treating, preventing or managing cancer are disclosed. Also disclosed are methods of treating, preventing or managing cancer, such as leukemia, comprising administering the compounds. In certain embodiments, the method of treatment comprise administering a compound provided herein in combination with a second agent. Pharmaceutical compositions and single unit dosage forms comprising the compounds are also disclosed.
[EN] ANTIPROLIFERATIVE COMPOUNDS AND METHODS OF USE THEREOF<br/>[FR] COMPOSÉS ANTIPROLIFÉRATIFS ET MÉTHODES D'UTILISATION DESDITS COMPOSÉS
申请人:CELGENE CORP
公开号:WO2016007848A1
公开(公告)日:2016-01-14
Compounds of formula (I) for treating, preventing or managing cancer are disclosed. Also disclosed are methods of treating, preventing or managing cancer, such as leukemia, comprising administering the compounds. In certain embodiments, the method of treatment comprise administering a compound provided herein in combination with a second agent. Pharmaceutical compositions and single unit dosage forms comprising the compounds are also disclosed. In Formula (I) R1 is optionally substituted cycloalkyi, aryl, heteroaryl or heterocyclyl; and R2 and R3 are each halo.