How Do Phosphinates React with Unactivated Alkenes Under Organic Photocatalyzed Conditions? Substrate Scope and Mechanistic Insights
作者:Giovanni Fausti、Fabrice Morlet-Savary、Jacques Lalevée、Annie-Claude Gaumont、Sami Lakhdar
DOI:10.1002/chem.201604683
日期:2017.2.10
metal‐free hydrophosphinylation of unactivated alkenes with ethyl and butyl phosphinates is described. The reaction works with a low catalyst loading of 9‐mesityl‐10‐methylacridinium perchlorate (Fukuzumi photocatalyst, 0.5 mol %) in the presence of diphenyliodonium triflate as oxidant. The reaction proceeds smoothly and covers a broad scope of substrates. Detailed mechanistic investigations, including EPR
描述了未活化烯烃与次膦酸乙酯和次膦酸丁酯的首次可见光介导,无金属的氢次膦酸酯化。在三氟甲磺酸二苯基碘鎓作为氧化剂的情况下,该反应在低负载量的9-间苯甲基-10-甲基rid啶高氯酸盐(Fukuzumi光催化剂,0.5 mol%)下进行。反应进行顺利,并覆盖了广泛的底物。详细的机械研究,包括EPR光谱,荧光和稳态光解,使这种光反应的机理得以合理化。