Cryptand-22 as an efficient ligand for the copper-catalyzed cross-coupling reaction of diorgano dichalcogenides with terminal alkynes leading to the synthesis of alkynyl chalcogenides
摘要:
A general and efficient method for the cross-coupling reaction of diorgano dichalcogenides with terminal alkynes using copper iodide/cryptand-22 (CuI/C22) has been developed. This protocol gave allcynyl chalcogenides in moderate to excellent yields in the presence of K3PO4 as the base under aerobic conditions. (C) 2014 Elsevier Ltd. All rights reserved.
Air‐stable CuI/cryptand‐22 complex was found to be a highly active catalyst for the solvent‐free cross‐coupling reaction of terminalalkynes with different acylchlorides in the presence of Et3N as base to give the corresponding ynones in quantitative yields.
发现在以Et 3 N为碱的情况下,空气稳定的Cu I / cryptand-22络合物是高活性催化剂,可用于末端炔烃与不同的酰氯的无溶剂交叉偶联反应,从而定量给出相应的炔酮产量。