Photoredox/Cobalt Dual Catalysis for Visible-Light-Mediated Alkene–Alkyne Coupling
作者:Pramod Rai、Kakoli Maji、Biplab Maji
DOI:10.1021/acs.orglett.9b01201
日期:2019.5.17
Dual photoredox transition-metal catalysis has recently emerged as a powerful tool for making synthetically challenging carbon–carbon bonds under milder reaction conditions. Herein, we report on the visible-light-mediated controlled generation of low-valent cobalt catalyst without the need for a metallic reductant. It enabled C–C bondformation via ene-yne coupling at roomtemperature. The generality
CURABLE LIQUIDS AND INKJET INKS FOR FOOD PACKAGING APPLICATIONS
申请人:Agfa Graphics NV
公开号:US20140285568A1
公开(公告)日:2014-09-25
A radiation curable liquid includes at least one free radical polymerizable monomer or oligomer, at least one diffusion hindered acetalysation catalyst, and at least one diffusion hindered hydroxyl containing compound. The radiation curable liquid applied to a substrate prevents migration of very low viscous monomers, such as vinyl ether acrylate monomers, into the substrate.
A catalytic alkene insertion approach to bicyclo[2.1.1]hexane bioisosteres
作者:Soumitra Agasti、Frédéric Beltran、Emma Pye、Nikolas Kaltsoyannis、Giacomo E. M. Crisenza、David J. Procter
DOI:10.1038/s41557-023-01135-y
日期:——
realized. Here we describe a broadly applicable catalytic approach that delivers substituted BCHs by intermolecular coupling between olefins and bicyclo[1.1.0]butyl (BCB) ketones. The SmI2–catalysed process works for a wide range of electron-deficient alkenes and substituted BCB ketones, operates with SmI2 loadings as low as 5 mol% and is underpinned by a radical relay mechanism that is supported by
A radiation curable composition comprising at least one polymerizable compound and an adhesion promoter, characterized in that the adhesion promoter includes:
- a polymerizable group selected from the group consisting of an acrylate, a methacrylate, an acrylamide, a methacrylamide, a styrene, a maleimide, a vinyl ether and a vinyl ester; and
- an adhesion promoting group containing at least one nitrogen containing five or six membered heteroaromatic ring.