The intermolecular C–C, C–O, C–S and C–N bonds construction between diazo compounds and acyclic, cyclic 1,3-dicarbonyl compounds, thiophenol, alkynes were developed by using a TFMSA@SBA-15, providing a metal-free and eco-friendly platform.
activity. An easy and highly efficient approach to sulfur-containing compounds, by S–H insertion reactions of α-keto esters with thiols, is reported. The substrate scope was remarkably wide, affording the corresponding products in up to 97% yield. Overall, the raw materials were readily available and the reaction conditions were mild in this synthetic method.
A stable Copper-Modified silica microsphere catalyst for the synthesis of N-substituted carbazoles and organosilanes
作者:Haodong Xie、Qian Ma、Yuzhi Wang、Yiming Sun、Jonathan B. Baell、Fei Huang、Yang Yu
DOI:10.1016/j.jcat.2024.115294
日期:2024.1
various transformations and are applied broadly in the synthesis of complex molecules and drug. Typically, such transformations require expensive metal and complex ligands, leading to a vigorous reaction system and trace metal residues. Herein, we report copper-modified silica microspheres (SM-b) as heterogeneous catalyst in the insertionreaction of diazo compounds with carbazole and silanes. Under