有机光化学反应由于环境友好、操作简单、反应条件温和等优点备受关注，成为近年的研究热点之一。本项课题拟以Norrish I型光化学反应为基础，设计合成简单易得的有机小分子，通过研究其在不同反应条件下的光化学反应行为和反应机理, 开展新型有机光化学串联反应的研究，主要内容包括：利用苯甲酰基自由基加成和1,2-/1,4-芳香基迁移串联反应实现烯键苯甲酰基化和芳香基化；通过分子间苯甲酰基自由基和含有双键的酰胺加成关环实现吡咯酮化合物的光化学合成；利用Norrish I型反应断键产生自由基的特点，通过分子内的自由基加成关环实现多取代茚酚类化合物的光化学合成。通过以上工作的开展，探索能够简捷、高效合成多取代吡咯酮化合物和茚酚类化合物等重要中间体的有机光化学新途径, 加深对有机光化学新领域的探索，进一步拓展有机光化学反应在有机合成中的应用。

Recently, organic photochemical reactions has received considerable interests from both academy and industry because the reaction conditions are mild and environmental friendly. The photon involved in the procedure can be considered as the ideal clean reagent for organic synthesis in contrast to toxic chemical activators. Based upon our long-term investigation on the photoreactions, we are continuing to explore new photochemical reactions through the application of Norrish type I reaction which include the benzoylation and aromatization of double bond via benzoyl radical addition and 1,2-/1,4-aromatic group shift, synthesis of pyridoin compounds via intermolecular benzoyl radical addition and cyclization cascade reactions, and the synthesis of indenol compounds through intramolecular radical cyclization reactions. The research work will further develop new photoreactions and highlight the application of photochemistry in the realm of organic synthesis.