Synthesis of 1,3-Dimesitylimidazolium Tetraphenylborate (IMesH+BPh4‐)
2:49
Photogeneration of 1,3-Dimesitylimidazol-2-ylidene (IMes) and Formation of the 1,3-Dimesitylimidazolium-2-dithiocarboxylate Adduct (IMes-CS2)
4:13
Spectrophotometric Titration of Photogenerated IMes
6:12
Photoinduced Ring-Opening Metathesis Polymerization (PhotoROMP) of Norbornene (NB) in Miniemulsion
9:29
Results: Characterization of N-Heterocyclic Carbene (NHC) Products
11:35
Conclusion
필기록
N-heterocyclic carbenes, or NHC, are key compounds that can be used as organocatalyst, as ligands, or as reactants. However, they are highly moisture-sensitive, which requires them to manipulated in a glove box. This procedure provides straightfor
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We describe a protocol to photogenerate N-heterocyclic carbenes (NHCs) by UV irradiation of a 2-isopropylthioxanthone/imidazolium tetraphenylborate salt system. Methods to characterize the photoreleased NHC and elucidate the photochemical mechanism are proposed. The protocols for ring-opening metathesis photopolymerization in solution and miniemulsion illustrate the potential of this 2-component NHC photogenerating system.