Synthesis of Functionalized 3,4-Diarylbenzophenones and 2,4-Diarylbenzophenones by Site-Selective Suzuki and Sonogashira Cross-Coupling Reactions of Bis(triflates) of 3,4- and 2,4-Dihydroxybenzophenone
作者:Peter Langer、Rasheed Khera、Muhammad Nawaz、Holger Feist、Alexander Villinger
DOI:10.1055/s-0031-1289649
日期:2012.1
Palladium(0)-catalyzed Suzuki and Sonogashira cross-coupling reactions of the bis(triflates) of 2,4- and 3,4-dihydroxybenzophenone afforded 2,4- and 3,4-diarylbenzophenones, respectively. The reactions proceeded with very good site-selectivity in favor of position 4. benzophenone - cross-coupling - palladium - site-selectivity - Suzuki reaction - Sonogashira reaction
钯(0)催化的2,4-和3,4-二羟基二苯甲酮的双(三氟甲磺酸酯)的Suzuki和Sonogashira交叉偶联反应分别得到2,4-和3,4-二芳基二苯甲酮。反应以非常好的位点选择性进行,有利于位置4。 二苯甲酮-交叉偶联-钯-位点选择性-铃木反应-Sonogashira反应