THF: An Efficient Electron Donor in Continuous Flow Radical Cyclization Photocatalyzed by Graphitic Carbon Nitride
作者:Magdalena Woźnica、Nicolas Chaoui、Soraya Taabache、Siegfried Blechert
DOI:10.1002/chem.201404440
日期:2014.11.3
Mesoporous graphitic carbon nitride (mpg‐C3N4) was found to be an efficient heterogeneous photocatalyst for the metal‐free radical cyclization of 2‐bromo‐1,3‐dicarbonyl compounds. Reactions leading to functionalized cyclopentanes proceed under mild conditions and can be conducted in a continuous flow photoreactor. Compared to the batch reaction, the use of a continuous flow reactor resulted in a significant
发现介孔石墨碳氮化物(mpg-C 3 N 4)是2-溴-1,3-二羰基化合物的金属自由基环化的有效多相光催化剂。导致官能化的环戊烷的反应在温和的条件下进行,可以在连续流动的光反应器中进行。与分批反应相比,使用连续流动反应器可显着减少反应时间(4小时后,批次中0.04 mmol底物的完全转化,而在流动反应器中,相同量的底物可以完全转化)在40分钟内转化为产品)。该反应的机理研究表明,THF不仅起溶剂的作用,而且还是至关重要的氢和电子给体。