Expedient Synthesis of Functionalized Triarylmethanols through Tandem Formation of Geminal CC and CO Bonds
作者:Yu Tian、Yi Sui、Yonghong Gu、Shi-Kai Tian
DOI:10.1002/adsc.201200664
日期:2012.12.14
unsymmetric functionalized triarylmethanols. Both reactions proceed smoothly in trifluoroacetic acid in the presence of an inexpensive oxidant (manganese dioxide or potassium persulfate) and a catalytic amount of palladium diacetate to give a range of functionalized triarylmethanols in moderate to good yields and with extremely high regioselectivity. The two unprecedented reactions involve tandem formation
已经开发了N,N-二取代的苯胺的重排/氧化以及二芳基甲醇与苯胺衍生物的正式脱氢交叉偶联,用于制备对称和不对称的官能化的三芳基甲醇。两种反应均在廉价的氧化剂(二氧化锰或过硫酸钾)和催化量的二乙酸钯存在下于三氟乙酸中顺利进行,以中等至良好的收率和极高的区域选择性提供了一系列官能化的三芳基甲醇。这两个史无前例的反应涉及串联CC和CO键的形成,并且它们在合成上有用,原子效率高且操作简单。