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.
本文披露了从环
丙酮生成环烯烃(例如,二苯并环
辛烯)的光
化学方法。环烯烃可以与具有炔基反应基团(例如,“点击”反应中的
叠氮基团)的材料反应(例如,原位反应)。在优选实施例中,环烯烃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,这些反应可以用于选择性标记代谢修饰有含
叠氮基团表面
单糖的活细胞,或用于光导向表面图案制备。