Landarani-Isfahani Amir, Mohammadpoor-Baltork Iraj, Mirkhani Valiollah, Moghadam Majid, Tangestaninejad Shahram, Amiri Rudbari Hadi
Department of Chemistry, University of Isfahan Isfahan 81746-73441 Iran
RSC Adv. 2020 Jun 3;10(36):21198-21205. doi: 10.1039/d0ra00719f. eCollection 2020 Jun 2.
Dendrimers are of great interest due to their special structural topology and chemical versatility. Owing to their properties, dendrimers have found practical applications in catalytic processes as efficient nanoreactors. Therefore, we herein report an environmentally attractive strategy and highly efficient route for the synthesis of a wide variety of diaryl sulfides using palladium nanoparticles immobilized on a nano-silica triazine dendritic polymer (Pd-nSTDP) as a nanoreactor. In this manner, different diaryl or aryl heteroaryl sulfides and bis(aryl/heteroarylthio)benzene/anthracene/pyridine derivatives were prepared C-S cross-coupling reactions of aryl halides with diaryl/diheteroaryl disulfides under thermal conditions and microwave irradiation. The catalyst could be easily recovered and reused several times without any significant loss of its activity.
树枝状聚合物因其特殊的结构拓扑和化学多功能性而备受关注。由于其特性，树枝状聚合物在催化过程中作为高效纳米反应器已得到实际应用。因此，我们在此报告一种环境友好且高效的策略及路线，该路线使用负载于纳米二氧化硅三嗪树枝状聚合物（Pd-nSTDP）上的钯纳米粒子作为纳米反应器来合成多种二芳基硫醚。通过这种方式，在热条件和微波辐射下，利用芳基卤化物与二芳基/二杂芳基二硫化物的C-S交叉偶联反应制备了不同的二芳基或芳基杂芳基硫醚以及双（芳基/杂芳基硫代）苯/蒽/吡啶衍生物。该催化剂能够轻松回收并重复使用多次，且其活性没有任何显著损失。
