A photoredox catalyzed iminyl radical-triggered C–C bond cleavage/addition/Kornblum oxidation cascade of oxime esters and styrenes: synthesis of ketonitriles
A photoredox-catalyzed iminyl radical-triggered C–C bond cleavage/addition/Kornblum oxidation cascade of cycloketone oxime esters and styrenes in DMSO is described. This three-component, one-pot procedure features mild conditions, a broad substrate scope, and high functional group tolerance, providing an efficient approach to access diversely functionalized ketonitriles.
Cycloalkyl alkanoic acids as integrin receptor antagonists derivatives
申请人:——
公开号:US20040092538A1
公开(公告)日:2004-05-13
The present invention relates to a class of compounds represented by the Formula I
1
or a pharmaceutically acceptable salt thereof, pharmaceutical compositions comprising compounds of the Formula I, and methods of selectively inhibiting or antagonizing the &agr;
v
&bgr;
3
and/or &agr;
v
&bgr;
5
integrin.
本发明涉及一类由公式I代表的化合物
1
或其药用可接受的盐,包含公式I化合物的药物组合物,以及选择性地抑制或拮抗α
v
β
3
和/或α
v
β
5
整合素的方法。
Synthesis of Silylated Cyclobutanone and Cyclobutene Derivatives Involving 1,4‐Addition of Zinc‐Based Silicon Nucleophiles
作者:Ming Cui、Martin Oestreich
DOI:10.1002/chem.202102993
日期:2021.11.22
intermediate metal enolate can be trapped as an enol phosphate and further reacted with Grignard reagents in Kumada cross-coupling reactions. By this, a range of silylated cyclobutanone and cyclobutenederivatives becomes accessible.
Baeyer–Villigeroxidation of cyclobutanones is achieved in current developed protocol with 10-methylacridinium perchlorate (AcrH+ClO4−) as a novel organocatalyst both with irradiation at room temperature and without irradiation at elevated temperature. Excellent yields of the corresponding lactones are obtained and the possible mechanism has been proposed.
Directing-Group-Based Strategy Enabling Intermolecular Heck-Type Reaction of Cycloketone Oxime Esters and Unactivated Alkenes
作者:Yi Deng、Chunyang Zhao、Yu Zhou、Hongwei Wang、Xuexiang Li、Gui-Juan Cheng、Junkai Fu
DOI:10.1021/acs.orglett.0c00963
日期:2020.5.1
A new type of coupling between unactivated olefins and nonstabilized alkyl radicals was achieved, which enabled the first intermolecularHeck-typereaction of cycloketone oxime esters and unactivated alkenes. This directing-group-based strategy was compatible with various unactivated alkenes and cyclobutanone-, cyclopentanone-, and cyclohexanone-derived oxime esters. Density functional theory calculations