Cyclic alkynes (e.g., cyclooctynes such as dibenzocyclooctynes) can be photochemically generated from cyclopropenones as disclosed herein. The cyclic alkynes can be reacted (e.g., in situ) with materials having alkyne-reactive groups (e.g., azide groups in a “click” reaction). In preferred embodiments, the generation and reaction of the cyclic alkyne can proceed in the absence of a catalyst (e.g., Cu(I)). These reactions can be useful, for example, for the selective labeling of living cells that are metabolically modified with azido-containing surface monosaccharides, or for light-directed surface patterning.
本文揭示了可以通过光
化学方法从环
丙酮生成环烯炔(例如二苯并环
辛烯)。环烯炔可以与具有炔基反应性基团的材料(例如“点击”反应中的偶氮基团)反应(例如原位反应)。在优选实施例中,环烯炔的生成和反应可以在无催化剂(例如Cu(I))的情况下进行。例如,这些反应可用于选择性标记代谢修饰了含偶氮基团表面
单糖的活细胞,或用于光定向表面图案化。