Catalytic dehydrogenative dual functionalization of ethers: dealkylation–oxidation–bromination accompanied by C–O bond cleavage via aerobic oxidation of bromide
A catalytic dehydrogenative dual functionalization (DDF) of ethers viaoxidation, dealkylation, and α-bromination by the aerobic oxidation of bromide was developed to obtain the corresponding α-bromo ketones in high yields. In particular, the reaction of substituted tetrahydrofurans as cyclic ethers provided 3,3-dibromo tetrahydrofuran-2-ols in high yields selectively through the double α-bromination
Pd-Catalyzed reductive heck reaction of olefins with aryl bromides for Csp<sup>2</sup>–Csp<sup>3</sup> bond formation
作者:Liqun Jin、Jiaxia Qian、Nan Sun、Baoxiang Hu、Zhenlu Shen、Xinquan Hu
DOI:10.1039/c8cc02571a
日期:——
We developed a Pd-catalyzed intermolecular reductive Heck reaction to construct Csp2–Csp3 bonds between arylbromides and olefins. Various styrene derivatives, acyclic and cyclic alkenes, were well tolerated to couple with varied arylbromides in linear selectivity. Kinetic and deuterium labeling experiments suggested that i-PrOH provides a hydride through β-H elimination.
[EN] PYRAZOLE COMPOUNDS AS BTK INHIBITORS<br/>[FR] COMPOSÉS DE PYRAZOLE UTILISÉS EN TANT QU'INHIBITEURS DE BTK
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2015116485A1
公开(公告)日:2015-08-06
The present invention encompasses compounds of the formula (I) wherein the groups R1, Cy, and Y are defined herein, which are suitable for the treatment of diseases related to BTK, process of making, pharmaceutical preparations which contain compounds and their methods of use.
Nickel Complex Catalyzed Efficient Activation of sp3 and sp2 C–H Bonds for Alkylation and Arylation of Oxygen Containing Heterocyclic Molecules
作者:Yashraj Gartia、Punnamchandar Ramidi、Darin E. Jones、Sharon Pulla、Anindya Ghosh
DOI:10.1007/s10562-013-1170-8
日期:2014.3
A nickel(II) complex (1) of N,N′-bis(2,6-diisopropylphenyl)-2,6-pyridinedicarboxamido (L) ligand was examined for catalytic coupling of Grignardreagents with the C–H bond of oxygen containing heterocyclic compounds such as tetrahydrofuran and furan. The nickel(II) complex showed excellent activity in catalyzing C–H activation and further coupling with various Grignardreagents. The effective activation
Direct C(sp<sup>3</sup>)–H Cross Coupling Enabled by Catalytic Generation of Chlorine Radicals
作者:Benjamin J. Shields、Abigail G. Doyle
DOI:10.1021/jacs.6b08397
日期:2016.10.5
Here we report the development of a C(sp3)-H cross-coupling platform enabled by the catalytic generation of chlorine radicals by nickel and photoredox catalysis. Aryl chlorides serve as both cross-coupling partners and the chlorine radical source for the α-oxy C(sp3)-H arylation of cyclic and acyclic ethers. Mechanistic studies suggest that photolysis of a Ni(III) aryl chloride intermediate, generated