Dioxazolones as masked ester surrogates in the Pd(<scp>ii</scp>)-catalyzed direct C–H arylation of 6,5-fused heterocycles
作者:Paridhi Saxena、Neha Maida、Manmohan Kapur
DOI:10.1039/c9cc05563k
日期:——
simple and effective Pd(II)-catalyzed regioselectiveC(2)–H arylation of 6,5-fused heterocycles with dioxazolones as a masked ester surrogate undermildconditions is reported. The significance of the arylation is highlighted by the new reactivity demonstrated in dioxazolones via proximal C–H activation of the cyclic carbonate of the hydroxamic acid functionalityunder protic conditions.
PROKINETICIN 1 RECEPTOR ANTAGONISTS FOR THE TREATMENT OF PAIN
申请人:Flores Christopher M.
公开号:US20110319400A1
公开(公告)日:2011-12-29
Disclosed are compounds, compositions and methods for treating pain, including inflammatory, visceral, and acute pain. Such compounds are represented by Formula (I) as follows:
wherein A
1
, L
1
, D, and Q are defined herein.
Copper-catalyzed direct alkylation of heteroarenes
作者:Cédric Theunissen、Jianjun Wang、Gwilherm Evano
DOI:10.1039/c6sc05622a
日期:——
process is reported for the directalkylation of C–H bonds in heteroarenes, privileged scaffolds in many areas of science. This reaction is based on the copper-catalyzed addition of alkyl radicals generated from activated secondary and tertiary alkyl bromides to a wide range of arenes, including furans, thiophenes, pyrroles, and their benzo-fused derivatives, as well as coumarins and quinolinones.
Copper‐Catalyzed Direct Perfluoroalkylation of Heteroarenes
作者:Hajar Baguia、Gwilherm Evano
DOI:10.1002/chem.202103599
日期:2022.1.27
An efficient process for the copper-catalyzeddirect perfluoroalkylation of C−H bonds in heteroarenes with commercially available perfluoroalkyl iodides is reported in this work. This reaction is based on a simple combination of copper(I) iodide and phenanthroline enabling the easy reduction of perfluoroalkyl iodides to the corresponding radical species that add to a wide range of heteroarenes. High
Copper-Catalyzed C2 and C3 Phosphonation of Benzofuran and Benzothiophene with Trialkyl Phosphites
作者:Yufeng Wang、Yajie Yang、Kun Jie、Ling Huang、Shengmei Guo、Hu Cai
DOI:10.1002/cctc.201701361
日期:2018.2.21
A strategy for the selective phosphonation of benzofuran and benzothiophene with trialkyl phosphites was developed. In these reactions, the C−H phosphonation of benzofurans or benzothiophenes at the C2 or C3 position with trialkyl phosphites was successfully achieved without directing groups by using a copper catalyst. Additionally, the C5 phosphonation of furan was successful under the same conditions