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.
环状
炔烃(例如,二苯并环辛
炔烃等)可以从环
丙酮中进行光
化学合成,如本文所述。环状
炔烃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)。在优选实施方式中,生成和反应环状
炔烃可以在无催化剂(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偶氮基团表面
单糖的活细胞,或用于光驱动表面图案化。