Palladium‐Catalyzed Desulfurative Amide Formation from Thioureas and Arylboronic Acids
作者:Jianke Su、Wendong Li、Xin Li、Jian Xu、Qiuling Song
DOI:10.1002/cctc.202001099
日期:2020.11.19
Pd‐catalyzed desulfurative amide formation involved Suzuki‐Miyaura coupling reaction, notably the Pd complex was generated in situ from thioureas, Ag salt and Pd catalyst. Silver salt was essential for the construction of this type of carbenes from available and stable thioureas and well participated in the catalytic cycle. We report a method for the synthesis of arylamides from arylboronicacids, which
Facile one-pot synthesis of thio and selenourea derivatives: A new class of potent urease inhibitors
作者:Kirubakaran Sivapriya、Perumal Suguna、Arun Banerjee、Vadivelu Saravanan、Desirazu N. Rao、Srinivasan Chandrasekaran
DOI:10.1016/j.bmcl.2007.07.085
日期:2007.11
A facile, one-pot synthesis of thio and selenourea derivatives from amines using tetrathiomolybdate 1 and tetraselenotungstate 2 as sulfur and selenium transfer reagents, respectively, is reported. The compounds were tested for their activity as urease inhibitors and some of the compounds showed potent activity in the nanomolar range towards jack bean urease.
Cp*Co(<scp>iii</scp>)-catalyzed thiocarbamate-directed C–H aminocarbonylation, amination, and cascade annulation of pyrroles
作者:Shuvendu Saha、Modhu Sudan Maji
DOI:10.1039/d2cc03992c
日期:——
Cobalt(III)-catalyzed thiocarbamate directed aminocarbonylation and amination of C–H bonds are described to access diverse amides. Biologically relevant pyrrolo[1,2-c]imidazoles were readily accessed via one-pot intramolecular cyclization at the thiocarbamoyl directing group. Notably, C–N amidation proceeded smoothly with an elusive catalyst TON of 250 for this Cp*Co(III)-catalysis. Broad scope, scalability
描述了钴(III)催化的硫代氨基甲酸盐定向的氨基羰基化和 C-H 键的胺化以获得不同的酰胺。生物相关的吡咯并[1,2 - c ]咪唑很容易通过硫代氨基甲酰基导向基团的一锅分子内环化获得。值得注意的是,对于这种 Cp*Co( III )催化,C-N 酰胺化在难以捉摸的催化剂 TON 为 250 的情况下顺利进行。广泛的范围、可扩展性和易于去除 DG 是这些方法的其他关键特征。通过对照实验和 DFT 计算提出了这些 C-H 酰胺化反应的机理。