CYCLIC CARBONYL COMPOUNDS WITH PENDANT CARBONATE GROUPS, PREPARATIONS THEREOF, AND POLYMERS THEREFROM
申请人:Fujiwara Masaki
公开号:US20110269917A1
公开(公告)日:2011-11-03
A one pot method of preparing cyclic carbonyl compounds comprising an active pendant pentafluorophenyl carbonate group is disclosed. The cyclic carbonyl compounds can be polymerized by ring opening methods to form ROP polymers comprising repeat units comprising a side chain pentafluorophenyl carbonate group. Using a suitable nucleophile, the pendant pentafluorophenyl carbonate group can be selectively transformed into a variety of other functional groups before or after the ring opening polymerization.
Tagging alcohols with cyclic carbonate: a versatile equivalent of (meth)acrylate for ring-opening polymerization
作者:Russell C. Pratt、Fredrik Nederberg、Robert M. Waymouth、James L. Hedrick
DOI:10.1039/b713925j
日期:——
Cyclic carbonate monomers based on a single biocompatible scaffold allow for incorporation of a wide range of functional groups into macromolecules via ring-opening polymerization.
基于单一生物相容性骨架的环碳酸盐单体,通过开环聚合可以将多种功能基团引入到大分子中。
Visible-Light-Mediated Thiol–Ene Reactions through Organic Photoredox Catalysis
作者:Gaoyuan Zhao、Sarbjeet Kaur、Ting Wang
DOI:10.1021/acs.orglett.7b01441
日期:2017.6.16
Synthetically useful radical thiol–ene reactions can be initiated by visible-light irradiation in the presence of an organic photocatalyst, 9-mesityl-10-methylacridinum tetrafluoroborate. The key thiyl radical intermediates are generated upon quenching of the photoexcited catalyst with a variety of thiols. The success of this method requires only the use of near-stoichiometric levels of alkene coupling
作者:Sarbjeet Kaur、Gaoyuan Zhao、Evan Busch、Ting Wang
DOI:10.1039/c8ob02313a
日期:——
presence of visible light is used to initiate thiol–ene and thiol–yne reactions. Thiyl radicals are generated upon quenching the photoexcited catalyst with a range of thiols. The highlighted mild nature of the reaction conditions allows a broad substrate scope of the reactants. Relying on this efficient metal-free condition, both thiol–ene and thiol–yne reactions between carbohydrates and peptides could
investigated in helical aromatic oligoamide foldamers. Depending on the position of thiol‐bearing side chains, exclusive intramolecular or intermolecular disulfide bridging may occur. The two processes are capable of self‐sorting, presumably by dynamic exchange. Quantitative assessment of helix handedness inversion rates showed that bridging stabilizes the folded structures. Intermolecular disulfide bridging