New 1,2-dithioether based 2D copper(I) coordination polymer: from synthesis to catalytic application in A³-coupling reaction

Abstract

A new 2D copper(I) coordination polymeric complex has been synthesized from CuI and 1-(1-{4-chlorophenylthio}propan-2-ylthio)-4-chlorobenzene ([(CuI)₂{ArSCH₂CH(CH₃)SAr}₂]_n, Ar = 4-ClC₆H₄) and characterized by high resolution mass spectrometry (HRMS) and single crystal X-ray diffraction techniques. The complex has been employed as a suitable catalyst for a solvent-free, one-pot, three-component A³-coupling reaction. A variety of aromatic and aliphatic aldehydes, terminal alkynes and aliphatic cyclic secondary amines have been used to prepare a library of propargylamines using the 2D-Cu complex at significantly low concentration (0.2 mol%).

Keywords:

• Coordination polymer
• 2D-copper(I) complex
• solvent-free
• A³-coupling
• propargyl amine

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the Science and Engineering Research Board of India under Grant Number EMR/2015/000549.